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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 are the special dollar sign shell variables? - Stack Overflow
Sep 14, 2012 · In Bash, there appear to be several variables which hold special, consistently-meaning values. For instance, ./myprogram &; echo $! will return the PID of the process …
unix - what does '$?' 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?
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 …
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unix - How to move a running process to background - Stack …
I have a terminal connected to an external machine through ssh and have a process running in it. Is it possible move the execution to the background, so that I can close the ssh connection …
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.
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Aug 29, 2025 · UNIX 03 Company Name: Apple Inc. Product Name: macOS version 26.0 Tahoe Environment: on Apple silicon-based Mac computers Registered on: 29-Aug-2025 Display a …
How to check if $? is not equal to zero in unix shell scripting?
How to check if $? is not equal to zero in unix shell scripting? Asked 12 years, 11 months ago Modified 3 years, 11 months ago Viewed 358k times
unix - How can I pretty-print JSON in a shell script? - Stack Overflow
Dec 9, 2008 · json unix command-line format pretty-print edited Oct 6, 2021 at 8:31 community wiki 17 revs, 13 users 24% AnC