bash - Shell equality operators (=, ==, -eq) - Stack Overflow
Shell equality operators (=, ==, -eq) Asked 11 years, 10 months ago Modified 3 years, 5 months ago Viewed 644k times
What are the special dollar sign shell variables? - Stack Overflow
Sep 14, 2012 · $! is the PID of the most recent background command. $0 is the name of the shell or shell script. Most of the above can be found under Special Parameters in the Bash …
shell - How to concatenate string variables in Bash - Stack Overflow
Nov 15, 2010 · A bashism is a shell feature which is only supported in bash and certain other more advanced shells. It will not work under busybox sh or dash (which is /bin/sh on a lot of …
error in unix shell script - Unix & Linux Stack Exchange
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Difference between Login Shell and Non-Login Shell?
May 8, 2012 · I understand the basic difference between an interactive shell and a non-interactive shell. But what exactly differentiates a login shell from a non-login shell? Can you give …
When do we need curly braces around shell variables?
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Running multiple commands in one line in shell - Stack Overflow
Feb 27, 2011 · There is a variation of running multiple commands in one line in the shell where you want them to run simultaneously rather than one after the other. The OP was interested in …
shell - How can I compare numbers in Bash? - Stack Overflow
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Assigning default values to shell variables with a single command …
Jan 6, 2010 · 11 The provided answers are great but i wanted to share the following table and the bash one-liners as a summary of all what was written (feel free to enhance this summary 🤗): …
Check existence of input argument in a Bash shell script
Jun 26, 2011 · Check existence of input argument in a Bash shell script Asked 14 years, 4 months ago Modified 1 year, 4 months ago Viewed 2.1m times