The UNIX® Standard | www.opengroup.org
May 22, 2025 · Single UNIX Specification- “The Standard” The Single UNIX Specification is the standard in which the core interfaces of a UNIX OS are measured. The UNIX standard …
What does the line "#!/bin/sh" mean in a UNIX shell script?
Sep 10, 2011 · When you try to execute a program in unix (one with the executable bit set), the operating system will look at the first few bytes of the file. These form the so-called "magic …
unix - what does '$?' mean in a shell script? - Stack Overflow
Oct 5, 2012 · I came across a shell script that contains a statement like, if [ $val -eq $? ] What does $? mean here?
unix - How to get PID of process by specifying process name and …
Jul 3, 2013 · pgrep -x <process_name> | xargs kill -9 (incidentally, for this specific use case, might as well do pkill -9 -x <process_name>, but the question asked how to get the PID in general) …
What is the proper way to exit a command line program?
2 Take a look at Job Control on UNIX systems If you don't have control of your shell, simply hitting ctrl + C should stop the process. If that doesn't work, you can try ctrl + Z and using the jobs …
bash - What does " 2>&1 " mean? - Stack Overflow
To combine stderr and stdout into the stdout stream, we append this to a command: 2>&1 For example, the following command shows the first few errors from compiling main.cpp: g++ …
Difference between CR LF, LF and CR line break types
Oct 12, 2009 · I'd like to know the difference (with examples if possible) between CR LF (Windows), LF (Unix) and CR (Macintosh) line break types.
Find all files containing a specific text (string) on Linux
Jun 6, 2013 · How do I find all files containing a specific string of text within their file contents? The following doesn't work. It seems to display every single file in the system. find / -type f …
command line - How to close git commit editor? - Stack Overflow
I just executed a command $ git commit and it opens a new editor. But I'm trying to close that new commit editor. How to do this? I'm using Git for Windows.
How to fix Docker: Permission denied - Stack Overflow
Feb 24, 2018 · The Docker daemon always runs as the root user. If you don’t want to preface the docker command with sudo, create a Unix group called docker and add users to it. When the …