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Where does the irrational hate of black people comes from?
The irrational hate of black people, also known as racism, is a deeply entrenched and complex issue with a long history. Racism has its roots in the systems of slavery and colonialism that have been used to exploit and oppress black people for centuries. These systems have perpetuated negative stereotypes and prejudices about black people, which have been used to justify discrimination and violence against them.
Racism is also fueled by power dynamics and social conditioning. Those who have held power and privilege in society have often used their influence to maintain their dominance over marginalized groups, including black people. This has led to the internalization of negative attitudes towards black people by those who have been socialized in a racist culture.
Racism is a deeply harmful and destructive force that has caused immense suffering and injustice throughout history. It is important to recognize and challenge racism in all its forms, and to work towards a more inclusive and equitable society for all people.
I am African-Canadian with 2 engineering degrees and ask myself that question all the time, but I don’t bother anymore because I believe strongly that I contribute more to the society, and I live a better life than most of those racists. They (I am referring to irrational racists against black people only) are just jealous of black people strength, athleticism and intelligence that they don’t expect them to have. The only way to overcome it is to not need them (racists or anyone else in power).
Work hard, read as much as possible, educate yourself , build assets (buy real estate or valuable stocks) and make sure your kids are educated and of top of that let’s create and own our businesses and lands. Last, but not least, always be strong mentally and physically to scare them (racists one only) even more.
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When racists avoid to sit near you in the bus or train, use it at your advantage and enjoy the empty sit near you.
When racists refrain to speak to you, ignore them too, and listen to your radio on your headphone or read your book; always love yourself and make sure to keep your family together.
Our kids need both parents and strong family values. We are blessed with physical strength, spontaneity, good health and toughness and racists will kill us for it if they have their way.
How to stay healthy as a software engineer?
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How to stay healthy as a software engineer or IT professional?
I am a software engineer like you and by my second year I started feeling the unhealthy behavior of sitting down and coding for long hours.
- Exercise regularly: Exercise can help you maintain physical and mental health. Engaging in regular physical activity can help you reduce stress, improve your sleep, and boost your mood.
- Eat a healthy diet: A healthy diet can help you maintain your energy levels and focus. Make sure to eat a variety of fruits, vegetables, and whole grains, and limit your intake of processed and sugary foods.
- Get enough sleep: Adequate sleep is important for maintaining physical and mental health. Aim for 7-9 hours of sleep per night.
- Take breaks: It is important to take breaks from your work to avoid burnout. Step away from your computer, stretch, and take some time to relax.
- Stay hydrated: Drink plenty of water to stay hydrated and maintain your energy levels.
- Manage stress: Chronic stress can have negative impacts on your physical and mental health. Find healthy ways to manage stress, such as through exercise, meditation, or talking to a therapist.
- Practice good posture: Poor posture can lead to muscle strain and fatigue. Make sure to sit up straight, with your feet flat on the ground and your elbows bent at a 90-degree angle.
By following these tips, you can maintain your physical and mental health as a software engineer.
Below are the steps that I took:
- Avoid sitting down for more than 1 hour without getting up for a walk.
- Stand up for 15 minutes every hour to code.
- Take multiple short walks outdoor during working hours.
- Avoid elevators unless you have no choice, use the stairs to go up and down if your office floor is lower than the 5th floor.
- Avoid drinking sweet drinks or too much coffee during work hours.
- Avoid eating chips or almost anything while working.
- Instead of spending long hours reading manuals and documents on your computer, print them out, then take a walk and read them somewhere quiet while standing.
- Stretch often while working (extend your legs, arms, rotate your neck).
- Take short breaks of 2 to 5 minutes every 2 hours to read something different from your main topic. It can be news, sports, entertainment, or anything else you like. I read or write on Quora during my breaks.
- Change your position frequently and don’t hesitate to stand up at your desk from time to time while working.
- Make sure that your chair is always comfortable. Don’t hesitate to upgrade or get a better chair if necessary.
Here are the steps that I took to stay active and healthy:
- I am committed, no matter what, to playing at least 2 competitive games of soccer or basketball a week, either in an amateur team league or at drop-in sports leagues. Check out one of my drop in league chapter in your city at ShowUpAndPlaySports chapters – Djamga – ShowUpAndPlaySports
- I volunteer to organize soccer and basketball games every week via Home – Djamga – ShowUpAndPlaySports
- I walk regularly at lunch time, and try to get as much sunshine as possible.
- I visit a chiropractor once a month to adjust my back and neck.
- I visit a certified massage therapist regularly to work on my neck, back, hamstrings, and feet.
- I visit a pedicure clinic once a month for a good pedicure and foot massage.
- I eat a healthy diet of mostly vegetables and fish (mostly salmon).
- I drastically reduced the carbs in my diet. Every morning, I take one cup of coffee or tea with no sugar or milk and a small cake. Then, I am covered until dinner time. In the evening, I have a large meal of vegetables and fish, usually salmon.
- I drink plenty of water.
- I don’t drink alcohol or smoke.
- It is very important to sleep well; sleep at least 6 hours per day.
You spend about 25% of your life in your bed, there you need to invest on your mattresses, pillows, bed furnitures and upgrade them regularly.
After adopting these habits, my efficiency came back. I was able to work as hard as when I was a student . I even lost weight!
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Now, I can go toe-to-toe with young players and students in their twenties on the soccer field. I easily work more than 60 hours per week and still have enough time to play with my kids and enjoy a fulfilling life with my family.
I highly recommend these life-changing habits to all IT professionals and engineers so they can remain healthy and effective as they get older and busier.
reverse a string on Linux and Windows
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How to reverse a string on Linux and Windows
On Linux:
- Using the
revcommand: Therevcommand is a utility that reverses the lines of a file or the characters in a string. To reverse a string, you can use theechocommand to pass the string torev:
echo "string" | rev
- Using the
sedcommand: Thesedcommand is a powerful utility that can perform various text transformations. To reverse a string, you can use thesedcommand with the-roption and the's/.*(.)/\1/g'expression:
echo "string" | sed -r 's/.*(.)/\1/g'
- Using the
awkcommand: Theawkcommand is a programming language that is used for text processing. To reverse a string, you can use theawkcommand with the{print}action:
echo "string" | awk '{print $1}'
On Windows:
- Using the
powershellcommand: Thepowershellcommand is a shell that provides a command-line interface for Windows. To reverse a string, you can use thepowershellcommand with the-Coption and the'[System.Text.Encoding]::Unicode.GetString([System.Text.Encoding]::Unicode.GetBytes("string"))'expression:
powershell -C "[System.Text.Encoding]::Unicode.GetString([System.Text.Encoding]::Unicode.GetBytes("string"))"
- Using the
cmdcommand: Thecmdcommand is the command-line interpreter for Windows. To reverse a string, you can use thecmdcommand with theforloop:
cmd /c "for /L %i in (1,1,%len%) do @echo !string:~%len%-%i,1!"
These are some ways to reverse a string on Linux and Windows. There are other ways to achieve this, using different utilities or programming languages.
Via shell script on Linux
sh-3.2# vi reverse.sh
#### Start Script #####
#!/bin/bash
input_string=”$1″
reverse_string=””
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input_string_length=${#input_string}
for (( i=$input_string_length-1; i>=0; i– ))
do
reverse_string=”$reverse_string${input_string:$i:1}”
done
echo “$reverse_string”
##### End Script #####
Let’s run it:
sh-3.2# chmod 775 reverse.sh
sh-3.2# ./reverse.sh Etienne
enneitE
Via powershell script on Windows
#Let’s use the script reverse.ps1 below.
######
$string=”Etienne”
$string_array=$string -split “”
[array]::Reverse($string_array)
$string_array -join ”
#####Output#####
PS C:\Users\etienne_noumen\Documents\Etienne\Scripting> .\reverse.ps1
E t i e n n e
enneitE
Via powershell script on Windows in one line
([regex]::Matches($String,’.’,’RightToLeft’) | ForEach {$_.value}) -join ”
Via batch script on Windows
::Note: ReverseStr also calls StrLen
::and string length is not greater than 80 chars
:: but can be changed.
@echo off
SetLocal EnableDelayedExpansion
cls
set Str=Etienne
call :StrLen %Str%
echo Length=%Len%
call :ReverseStr %Str%
echo String=%Str%
echo Reverse Str=%Reverse%
exit /b
::—————-
:: Calc Var Length
::—————-
:: %*=Str to Check
:: Returns %Len%
:: —————
:StrLen %*
set Data=%*
for /L %%a in (0,1,80) do (
set Char=!Data:~%%a,1!
if not “!Char!”==”” (
set /a Len=%%a+1
) else (exit /b)
)
exit /b
::—————
:: Reverse String
::—————
:: %* Str to Reverse
:: Returns %Reverse%
::——————
:ReverseStr %*
set Data=%*
call :StrLen %Data%
for /L %%a in (!Len!,-1,0) do (
set Char=!Data:~%%a,1!
set Reverse=!Reverse!!Char!
)
exit /b
Via perl script on Windows or Linux
Via python script on Windows or Linux
def reverse_string(a_string)
return a_string[::-1]
reverse_string(“etienne”) returns “enneite”
Source:
jQuery What is it?
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Who hasn’t gotten this question yet: jQuery What is it?
Source: http://www.w3schools.com/jquery/jquery_intro.asp
Definition:
jQuery is a lightweight, “write less, do more”, JavaScript library.
jQuery is a cross-platform JavaScript library designed to simplify the client-side scripting of HTML.
Purpose
The purpose of jQuery is to make it much easier to use JavaScript on your website.
jQuery’s syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications
jQuery also simplifies a lot of the complicated things from JavaScript, like AJAX calls and DOM manipulation.
What is in it
The jQuery library contains the following features:
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- HTML/DOM manipulation
- CSS manipulation
- HTML event methods
- Effects and animations
- AJAX
- Utilities
Advantages:
The modular approach to the jQuery library allows the creation of powerful dynamic web pages and web applications.
jQuery has plugins for almost any task out there.
jQuery Syntax:
The jQuery syntax is tailor made for selecting HTML elements and performing some action on the element(s).
Basic syntax is: $(selector).action()
- A $ sign to define/access jQuery
- A (selector) to “query (or find)” HTML elements
- A jQuery action() to be performed on the element(s)
Examples:
$(this).hide() – hides the current element.
$(“p”).hide() – hides all
elements.
$(“.test”).hide() – hides all elements with class=”test”.
$(“#test”).hide() – hides the element with id=”test”.
Example of html page including jQuery code:
Test it below:
If you click on me, I will disappear.
Click me away!
Click me too!
More on jQuery:
[jQuery Guide and Resources]
JSON : JavaScript Object Notation
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What is JSON : JavaScript Object Notation?
Source: https://www.json.com/
What is JSON?
JSON is a lightweight text-based open standard designed for human-readable data. It is the most widely used format for exchanging data on the web. It originates from the JavaScript language and is represented with two primary data structures: ordered lists (recognized as ‘arrays’) and name/value pairs (recognized as ‘objects’).
Why JSON?
The JSON standard is language-independent and its data structures, arrays and objects, are universally recognized. These structures are supported in some way by nearly all modern programming languages and are familiar to nearly all programmers. These qualities make it an ideal format for data interchange on the web.
JSON vs XML
The XML specification does not match the data model for most programming languages which makes it slow and tedious for programmers to parse. Compared to JSON, XML has a low data-to-markup ratio which results in it being more difficult for humans to read and write.
JSON Data Types
- Number{ “myNum”: 123.456 }
A series of numbers; decimals ok; double-precision floating-point format. - String{ “myString”: “abcdef” }
A series of characters (letters, numbers, or symbols); double-quoted UTF-8 with backslash escaping. - Boolean{ “myBool”: true }
True or false. - Array{ “myArray”: [ “a”, “b”, “c”, “d” ] }
Sequence of comma-separated values (any data type); enclosed in square brackets. - Object{ “myObject”: { “id”: 7 } };
Unordered collection of comma-separated key/value pairs; enclosed in curly braces; properties (keys) are distinct strings. - Null{ “myNull”: null }
Variable with null (empty) value.
Unsupported Data Types
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- Undefinedvar myUndefined;
Variable with no value assigned. - Datevar myDate = new Date();
Object used to work with dates and times. - Errorvar myError = new Error();
Object containing information about errors. - Regular Expressionvar myRegEx = /json/i;
Variable containing a sequence of characters that form a search pattern. - Functionvar myFunction = function(){};
Variable containing a block of code designed to perform a particular task.
JSON cheat sheet
Example1: Mixed Data Types
var myObject = {
“myNumber”: 123.456,
“myString”: “abcdef”,
“myBool”: true,
“myArray”: [ “a”, “b”, “c”, “d” ],
“myObject”: { “id”: 7 },
“myNull”: null
};
Example2: Send HTTP POST request with JSON to a http://url with the following string fields: ‘first_name’, ‘last_name’, ’email’, ‘phone’,’urls’
curl -X POST -d ‘{“first_name”: “John”, “last_name”: “Doe”, “email”: “johndoe@email.com”, “phone”: “000-000-0000″,”urls”: [“https://djamga.com”,”https://enoumen.com”,”http://twitter.com/enoumen”]}’ http:/url -H ‘Content-Type: application/json’
Remove all empty lines in a file
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How to Remove all empty lines in a file on Linux and Windows?
Remove empty lines from file.txt via Linux command line
- Option 1: sed -i ‘/^$/d’ file.txt
- Option 2: awk ‘NF > 0’ file.txt > output.txt
- Option 3: perl -i.backup -n -e “print if /\S/” file.txt
- Option 4: grep . file.txt > output.txt
Remove empty lines from file.txt using Powershell script on Windows
Windows Boot process
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What is involved in Windows Boot Process:
The Windows boot process involves several stages, in which the operating system performs various tasks to prepare the system for use.
- The BIOS (Basic Input/Output System) runs a power-on self-test (POST) to check the system’s hardware components and to load the bootstrap program.
- The bootstrap program, also known as the boot loader, is responsible for loading the operating system kernel and transferring control to it. In Windows, the boot loader is called the bootmgr.
- The operating system kernel, which is the core of the operating system, initializes the system and starts the system services.
- The system services, such as the device drivers, are loaded and initialized.
- The operating system loads the user profile and starts the user interface, such as the desktop or the login screen.
- The user can log in and start using the system.
This is a general overview of the Windows boot process. The exact sequence of events may vary depending on the specific version of Windows and the hardware configuration of the system.
- Power is turned on.
- The first process starting when you turn on your computer is BIOS i.e, Basic Input Output System. BIOS has two functions, to conduct POST and read MBR.
- POST – POST stands for Power On Self Test. POST checks all the hardware devices connected to a computer like RAM, hard disk etc and make sure that the system can run smoothly with those hardware devices. If the POST is a failure the system halts with a beep sound.
- Now BIOS checks the boot priority. We can set the boot priority as CD drive, hard disk or floppy drive
- MBR – The next duty of BIOS is to read the MBR. MBR stands for Master Boot Record and its the first sector on a hard disk. MBR
contains the partition table and boot loader.
- Functions of Boot loader
Now BIOS has passed the control to boot loader and boot loader is a small program which loads kernel to computers memory. Actually there are two stages of boot loaders, stage 1 boot loader and stage 2 boot loader. MBR contains the stage 1 boot loader and stage 1 boot loader is a link to the stage 2 boot loader. The stage 2 boot loader resides in the boot partition and it loads the kernel to memory. - Boot files and functions
There are three boot files in a Windows operating system and they are NTLDR, NTDETECT.COM and Boot.ini. The boot files are found in the active partition of hard disk and its normally C drive in a Windows machine.- NTLDR – NTLDR stands for NT Loader and its the second stage bootloader. The path of NTLDR is C:\Windows\i386\NTLDR.
- Boot.ini – Boot.ini contains the configuration files of NTLDR. When the operating system is loaded we cannot pass any arguments to kernel, so those arguments are passed through boot.ini. You can edit boot.ini by opening through notepad. The path of Boot.ini is C:\boot.ini.
- NTDETECT.COM – This file detect hardware’s and passes information to NTLDR. Using the collected information the NTLDR creates a hardware key and this key is used to detect hardware’s. A new hardware key is generated after each reboot of the operating system and that’s why system asks to reboot after installation of a new hardware. The hardware keys created by NTLDR can be found in Windows registry at
HKEY_LOCAL_MACHINE -> HARDWARES.
- Kernel and its functions
After executing the functions of boot files the control is passed to Kernel. ntoskrnal.exe is the kernel file in a Windows machine and its path is C:\Windows\system 32\ntoskrnal.exe. Kernel acts as a layer between software and hardware. The library file hal.dll (C;\Windows\system32\hal.dll) helps Kernel to interact with hardware’s. HAL stands for Hardware Abstraction Layer and this hal.dll file is
machine specific. Now the drivers for hardware’s are loaded from the file C:\Windows\system32\config\system and the Kernel is loaded to primary memory.
- Services and log in procedure
When kernel is loaded in the primary memory services for each process is started and the registry entry for those services can be found at HKEY_LOCAL_MACHINE – System – Current control set – Services.
Winlogon.exe (C:\Windows\system32\winlogon.exe) is the last service started during this process.
Winlogon.exe starts the log in procedures of windows machine. It first calls the library file msgina.dll (C:\Windows\system32\msgina.dll). MSGINA stands for Microsoft Graphics Identification and Authentication and it provides the log in window. Now msginal.dll passes the control to LSA (Local Security Authority), it verifies the username and password from the SAM file. SAM (Security Accounts Manager) contains the information about all users created in a Windows operating system.
Now the booting procedure is over and we have reached the desktop of Windows operating system.
Source:
Mac OS X Boot Process
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What is Mac OS X Boot Process:
The Mac OS X boot process involves several stages, in which the operating system performs various tasks to prepare the system for use.
- When the Mac is powered on, the firmware (a low-level software that controls the hardware) performs a power-on self-test (POST) to check the hardware components.
- The firmware loads the bootloader, which is responsible for loading the operating system kernel and transferring control to it. In Mac OS X, the bootloader is called the boot.efi file.
- The operating system kernel, which is the core of the operating system, initializes the system and starts the system services.
- The system services, such as the device drivers, are loaded and initialized.
- The operating system loads the user profile and starts the user interface, such as the desktop or the login screen.
- The user can log in and start using the system.
This is a general overview of the Mac OS X boot process. The exact sequence of events may vary depending on the specific version of Mac OS X and the hardware configuration of the system.
| Boot ROM | Firmware. Part of Hardware system BootROM firmware is activated |
| POST | Power-On Self Test initializes some hardware interfaces and verifies that sufficient memory is available and in a good state. |
| EFI | Extensible Firmware Interface EFI does basic hardware initialization and selects which operating system to use. |
| BOOTX | boot.efi boot loader load the kernel environment |
| Rooting/Kernel | The init routine of the kernel is executed boot loader starts the kernel’s initialization procedure Various Mach/BSD data structures are initialized by the kernel. The I/O Kit is initialized. The kernel starts /sbin/mach_init |
| Run Level | mach_init starts /sbin/init init determines the runlevel, and runs /etc/rc.boot, which sets up the machine enough to run single-user. rc.boot figures out the type of boot (Multi-User, Safe, CD-ROM, Network etc.) |
- Power is turned on.
- Open Firmware code is executed.
- Hardware information is collected and hardware is initialized.
- Something (usually the OS, but also things like the Apple Hardware Test, etc.) is selected to boot. The user may be prompted to select what to boot.
- Control passes to /System/Library/CoreServices/BootX, the boot loader. BootX loads the kernel and also draws the OS badges, if any.
- BootX tries to load a previously cached list of device drivers (created/updated by /usr/sbin/kextcache). Such a cache is of the type mkext and contains the info dictionaries and binary files for multiple kernel extensions. Note that if the mkext cache is corrupt or missing, BootX would look in /System/Library/Extensions for extensions that are needed in the current scenario (as determined by the value of the OSBundleRequired property in the Info.plist file of the extension’s bundle.
- The init routine of the kernel is executed. The root device of the booting system is determined. At this point, Open Firmware is not accessible any more.
- Various Mach/BSD data structures are initialized by the kernel.
- The I/O Kit is initialized.
- The kernel starts /sbin/mach_init, the Mach service naming (bootstrap) daemon. mach_init maintains mappings between service names and the Mach ports that provide access to those services.
From here on, the startup becomes user-level:
- mach_init starts /sbin/init, the traditional BSD init process. init determines the runlevel, and runs /etc/rc.boot, which sets up the machine enough to run single-user.
- rc.boot figures out the type of boot (Multi-User, Safe, CD-ROM, Network etc.). In case of a network boot (the sysctl variable kern.netboot will be set to 1 in which case), it runs /etc/rc.netboot with a start argument.
Source: http://osxbook.com/book/bonus/ancient/whatismacosx/arch_startup.html
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Linux Boot process
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Let’s describe Linux Boot Process:
The Linux boot process involves several stages, in which the operating system performs various tasks to prepare the system for use.
- When the system is powered on, the BIOS (Basic Input/Output System) or the UEFI (Unified Extensible Firmware Interface) performs a power-on self-test (POST) to check the hardware components and to load the bootloader.
- The bootloader, such as GRUB (GRand Unified Bootloader), is responsible for loading the operating system kernel and transferring control to it.
- The operating system kernel, which is the core of the operating system, initializes the system and starts the system services.
- The system services, such as the device drivers, are loaded and initialized.
- The operating system loads the user profile and starts the user interface, such as the desktop or the login screen.
- The user can log in and start using the system.
This is a general overview of the Linux boot process. The exact sequence of events may vary depending on the specific distribution of Linux and the hardware configuration of the system.
| BIOS | Basic INPUT/OUTPUT System. Executes MBR |
| MBR | Master Boot Record Executes GRUB |
| GRUB | Grand Unified Bootloader Executes kernel |
| KERNEL | Kernel Executes /sbin/init |
| INIT | Init Executes Run level programs |
| Run Level | Run Level Programs are executed from /etc/rc.d/rc*.d/ |
- As power comes up the BIOS is given control
- BIOS runs self tests, usually including cursory memory tests.
- The BIOS then loads the first sector of the disk to be used for booting and transfers control to it.
- The MBR code varies. One version will chain to the code in the first sector of the boot partition (Windows), another will load a bootloader. Windows boot proceeds from code and information in the boot partition.
- The bootloader chooses kernel location and version
- The bootloader prepares kernel and initrd image in memory, transfers control to kernel
- Loading kernel modules
- Discovering hardware and load additional kernel modules to support it
- Looking for disks
- R/O mount of / partition so that it can potentially be checked and repaired
- init process spawn
- /etc/inittab read and executing
- Mounting all FSes from /etc/fstab
- runlevels running (based on default runlevel in /etc/inittab) or another init method such as systemd or upstart
- rc.local
- login prompt
Source:
Monitor Macbook
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How to Monitor Macbook with one single command?
$sudo sysdiagnose -f ~/Desktop/
The result is a compressed file named sysdiagnose_YYYY.MM.DD_HH-MM-SS-TTTT.tar.gz and it contains the following:
Accessibility
BluetoothTraceFile.pklg
DiagnosticMessages
Etienne’s SystemConfiguration
airport_info.txt
apsd-status.txt
bc_stats.txt
bootstamps.txt
brctl.tar.gz
breadcrumbs.txt
crashes_and_spins
darwinup.txt
dig-results.txt
disks.txt
diskutil.txt
error_log.txt
filecoordination_dump.txt
footprint-all.txt
fs_usage.txt
fsck_hfs_user.log
fsck_hfs_var.log
gpt.txt
ifconfig.txt
ioreg
ipconfig.txt
kextstat.txt
launchctl-list.txt
locale.txt
logs
lsappinfo.txt
lsmp.txt
lsof.txt
lsregister.txt
microstackshots
microstackshots_lastday.txt
microstackshots_lasthour.txt
microstackshots_lastminute.txt
mount.txt
netstat
nfsstat.txt
odutil.txt
pluginkit.txt
pmset_everything.txt
powermetrics.txt
ps.txt
ps_thread.txt
reachability-info.txt
resolv.conf
scutil.txt
smcDiagnose.txt
spindump.txt
stackshot-last-sym.log
sysctl.txt
sysdiagnose.log
system_profiler.spx
talagent.txt
taskinfo.txt
thermal.txt
top.txt
var_run_resolv.conf
vm_stat.txt
zprint.txt
You can use the top command to monitor the resources of your Macbook in real-time. The top command is a built-in utility that shows the processes that are currently running on the system, along with information about their CPU and memory usage.
To use the top command, open a terminal window and type top. The output will show the list of processes, sorted by their CPU usage, with the most CPU-intensive processes at the top. You can use the q key to exit the top command.
Here are some of the key options you can use with the top command:
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-o: sort the processes by a particular resource, such as CPU usage or memory usage. For example,top -o cpuwill sort the processes by CPU usage.-s: specify the delay between updates. For example,top -s 2will update the display every 2 seconds.-u: show the process for a particular user. For example,top -u usernamewill show the processes for the user with the specified username.
You can use these options in combination to customize the output of the top command. For example, to monitor the CPU usage of the processes owned by a particular user, you can use the following command:
top -o cpu -s 2 -u username
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List of Freely available programming books - What is the single most influential book every Programmers should read
- Bjarne Stroustrup - The C++ Programming Language
- Brian W. Kernighan, Rob Pike - The Practice of Programming
- Donald Knuth - The Art of Computer Programming
- Ellen Ullman - Close to the Machine
- Ellis Horowitz - Fundamentals of Computer Algorithms
- Eric Raymond - The Art of Unix Programming
- Gerald M. Weinberg - The Psychology of Computer Programming
- James Gosling - The Java Programming Language
- Joel Spolsky - The Best Software Writing I
- Keith Curtis - After the Software Wars
- Richard M. Stallman - Free Software, Free Society
- Richard P. Gabriel - Patterns of Software
- Richard P. Gabriel - Innovation Happens Elsewhere
- Code Complete (2nd edition) by Steve McConnell
- The Pragmatic Programmer
- Structure and Interpretation of Computer Programs
- The C Programming Language by Kernighan and Ritchie
- Introduction to Algorithms by Cormen, Leiserson, Rivest & Stein
- Design Patterns by the Gang of Four
- Refactoring: Improving the Design of Existing Code
- The Mythical Man Month
- The Art of Computer Programming by Donald Knuth
- Compilers: Principles, Techniques and Tools by Alfred V. Aho, Ravi Sethi and Jeffrey D. Ullman
- Gödel, Escher, Bach by Douglas Hofstadter
- Clean Code: A Handbook of Agile Software Craftsmanship by Robert C. Martin
- Effective C++
- More Effective C++
- CODE by Charles Petzold
- Programming Pearls by Jon Bentley
- Working Effectively with Legacy Code by Michael C. Feathers
- Peopleware by Demarco and Lister
- Coders at Work by Peter Seibel
- Surely You're Joking, Mr. Feynman!
- Effective Java 2nd edition
- Patterns of Enterprise Application Architecture by Martin Fowler
- The Little Schemer
- The Seasoned Schemer
- Why's (Poignant) Guide to Ruby
- The Inmates Are Running The Asylum: Why High Tech Products Drive Us Crazy and How to Restore the Sanity
- The Art of Unix Programming
- Test-Driven Development: By Example by Kent Beck
- Practices of an Agile Developer
- Don't Make Me Think
- Agile Software Development, Principles, Patterns, and Practices by Robert C. Martin
- Domain Driven Designs by Eric Evans
- The Design of Everyday Things by Donald Norman
- Modern C++ Design by Andrei Alexandrescu
- Best Software Writing I by Joel Spolsky
- The Practice of Programming by Kernighan and Pike
- Pragmatic Thinking and Learning: Refactor Your Wetware by Andy Hunt
- Software Estimation: Demystifying the Black Art by Steve McConnel
- The Passionate Programmer (My Job Went To India) by Chad Fowler
- Hackers: Heroes of the Computer Revolution
- Algorithms + Data Structures = Programs
- Writing Solid Code
- JavaScript - The Good Parts
- Getting Real by 37 Signals
- Foundations of Programming by Karl Seguin
- Computer Graphics: Principles and Practice in C (2nd Edition)
- Thinking in Java by Bruce Eckel
- The Elements of Computing Systems
- Refactoring to Patterns by Joshua Kerievsky
- Modern Operating Systems by Andrew S. Tanenbaum
- The Annotated Turing
- Things That Make Us Smart by Donald Norman
- The Timeless Way of Building by Christopher Alexander
- The Deadline: A Novel About Project Management by Tom DeMarco
- The C++ Programming Language (3rd edition) by Stroustrup
- Patterns of Enterprise Application Architecture
- Computer Systems - A Programmer's Perspective
- Agile Principles, Patterns, and Practices in C# by Robert C. Martin
- Growing Object-Oriented Software, Guided by Tests
- Framework Design Guidelines by Brad Abrams
- Object Thinking by Dr. David West
- Advanced Programming in the UNIX Environment by W. Richard Stevens
- Hackers and Painters: Big Ideas from the Computer Age
- The Soul of a New Machine by Tracy Kidder
- CLR via C# by Jeffrey Richter
- The Timeless Way of Building by Christopher Alexander
- Design Patterns in C# by Steve Metsker
- Alice in Wonderland by Lewis Carol
- Zen and the Art of Motorcycle Maintenance by Robert M. Pirsig
- About Face - The Essentials of Interaction Design
- Here Comes Everybody: The Power of Organizing Without Organizations by Clay Shirky
- The Tao of Programming
- Computational Beauty of Nature
- Writing Solid Code by Steve Maguire
- Philip and Alex's Guide to Web Publishing
- Object-Oriented Analysis and Design with Applications by Grady Booch
- Effective Java by Joshua Bloch
- Computability by N. J. Cutland
- Masterminds of Programming
- The Tao Te Ching
- The Productive Programmer
- The Art of Deception by Kevin Mitnick
- The Career Programmer: Guerilla Tactics for an Imperfect World by Christopher Duncan
- Paradigms of Artificial Intelligence Programming: Case studies in Common Lisp
- Masters of Doom
- Pragmatic Unit Testing in C# with NUnit by Andy Hunt and Dave Thomas with Matt Hargett
- How To Solve It by George Polya
- The Alchemist by Paulo Coelho
- Smalltalk-80: The Language and its Implementation
- Writing Secure Code (2nd Edition) by Michael Howard
- Introduction to Functional Programming by Philip Wadler and Richard Bird
- No Bugs! by David Thielen
- Rework by Jason Freid and DHH
- JUnit in Action
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Top 1000 Canada Quiz and trivia: CANADA CITIZENSHIP TEST- HISTORY - GEOGRAPHY - GOVERNMENT- CULTURE - PEOPLE - LANGUAGES - TRAVEL - WILDLIFE - HOCKEY - TOURISM - SCENERIES - ARTS - DATA VISUALIZATION
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Health Health, a science-based community to discuss health news and the coronavirus (COVID-19) pandemic
- New research shows gas stove emissions contribute to 19,000 deaths annually | California is considering a law that would require warning labels on gas stoves.by /u/chrisdh79 on May 19, 2024 at 4:14 pm
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- Young Adults Are Falling for Skin Cancer Myths, Survey Findsby /u/Outrageous_Roadhog on May 19, 2024 at 1:44 pm
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- Melanoma patients reveal dramatic stories for Skin Cancer Awareness Month: ‘I thought I was careful’by /u/lurker_bee on May 18, 2024 at 1:40 pm
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- Other countries have better sunscreens. Here's why we can't get them in the U.S.by /u/Maxcactus on May 18, 2024 at 12:03 pm
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Today I Learned (TIL) You learn something new every day; what did you learn today? Submit interesting and specific facts about something that you just found out here.
- TIL that part of Batman's iconic look is partly inspired by the villain from the film The Bat Whispers (1930) According to Bob Kane on of the creators of Batmanby /u/AdSpecialist6598 on May 19, 2024 at 3:49 pm
submitted by /u/AdSpecialist6598 [link] [comments]
- TIL that Brandi Brandt, a Playboy centerfold who played the elevator operator at the beginning of Aerosmith's "Love in an Elevator" ("Going...down?") was jailed up to six years in Australia for being part of a cocaine smuggling ringby /u/tamsui_tosspot on May 19, 2024 at 3:48 pm
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- TIL Germany was made the hosts of the 2006 FIFA worldcup after the editor-in-chief for the satire tabloid "Titanic" sent a fax to one of the representatives voting on the matter with promises of a gift basket worth ~20 USD if he voted for Germany.by /u/jimi15 on May 19, 2024 at 1:03 pm
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- TIL that the urine of postmenopausal women was used as infertility treatment (menotropins) since they contained higher quantities of specific hormones.by /u/TeaBagHunter on May 19, 2024 at 10:48 am
submitted by /u/TeaBagHunter [link] [comments]
- TIL Two of the highest concentrations of tornadoes outside the U.S. are Argentina and Bangladesh.by /u/alfdana on May 19, 2024 at 5:48 am
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Reddit Science This community is a place to share and discuss new scientific research. Read about the latest advances in astronomy, biology, medicine, physics, social science, and more. Find and submit new publications and popular science coverage of current research.
- Study in nice found that a continuous long-term ketogenic diet may induce senescence, or aged, cells in normal tissues, with effects on heart and kidney function in particularby /u/giuliomagnifico on May 19, 2024 at 3:19 pm
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- Negative impact of marital decline on cognitive function is greater than gains from marital satisfaction, study finds. This was much more pronounced in older adults than in middle-aged adults.by /u/mvea on May 19, 2024 at 2:29 pm
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- Recent research has found that psilocybin not only helps maintain body weight in female rats subjected to conditions mimicking anorexia nervosa but also enhances cognitive flexibility, particularly in adapting to changes in reward contingencies.by /u/chrisdh79 on May 19, 2024 at 2:02 pm
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- Cardiovascular disease is responsible for 40 percent of deaths in Europe. The probability of dying young (30–69 years) from cardiovascular disease is nearly five times as high in eastern Europe and central Asia compared to western Europeby /u/Wagamaga on May 19, 2024 at 1:45 pm
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- Repeat COVID-19 vaccinations elicit antibodies that neutralize variants, other viruses. Unlike immunity to influenza, prior immunity to SARS-CoV-2 doesn’t inhibit later vaccine responses. Rather, it promotes development of antibodies against variants and even some distantly related coronaviruses.by /u/mvea on May 19, 2024 at 11:30 am
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Reddit Sports Sports News and Highlights from the NFL, NBA, NHL, MLB, MLS, and leagues around the world.
- Darcy Byrne-Jones kicks the game-winning goal for Port Adelaide with less than 10 seconds to go before the final sirenby /u/Cursedsword02 on May 19, 2024 at 4:14 pm
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- The Edmonton Oilers score as fans sing “Livin’ On a Prayer”by /u/GreenSnakes_ on May 19, 2024 at 3:24 pm
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- Verstappen holds off Norris to win Emilia Romagna GPby /u/Oldtimer_2 on May 19, 2024 at 2:36 pm
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- Mbappé left out of PSG squad for final league game of the seasonby /u/Oldtimer_2 on May 19, 2024 at 1:44 pm
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- Tyson Fury voices dismay after suffering split decision loss to Oleksandr Usyk in undisputed world heavyweight title fight | Boxing Newsby /u/Gr8w8512 on May 19, 2024 at 1:14 pm
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