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What does $# mean in shell? I have code such as if [ $# -eq 0 ] then I want to understand what $# means, but Google search is very bad for searching these kinds of things
- bash - Shell equality operators (=, ==, -eq) - Stack Overflow
Shell equality operators (=, ==, -eq) Asked 11 years, 11 months ago Modified 3 years, 6 months ago Viewed 648k times
- Difference between Login Shell and Non-Login Shell?
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 examples for uses of
- shell - Difference between sh and Bash - Stack Overflow
Shell - "Shell" is a program, which facilitates the interaction between the user and the operating system (kernel) There are many shell implementations available, like sh, Bash, C shell, Z shell, etc
- What do $? $0 $1 $2 mean in a shell script? - Stack Overflow
I often come across $?, $0, $1, $2, etc in shell scripting I know that $? returns the exit status of the last command: echo quot;this will return 0 quot; echo $? But what do the others do? What
- What is the purpose of in a shell command? - Stack Overflow
The shell will try to create directory test and then, only if it was successful will try create file inside it So you may interrupt a sequence of steps if one of them failed
- What is the meaning of $? in a shell script? - Unix Linux Stack Exchange
When going through one shell script, I saw the term "$?" What is the significance of this term?
- What are the special dollar sign shell variables? - Stack Overflow
$! 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 Reference Manual Here are all the environment variables set by the shell For a comprehensive index, please see the Reference Manual Variable Index
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