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What does $# mean in shell? - Unix Linux Stack Exchange 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
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
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
What is the difference between shell, console, and terminal? The shell is the program which actually processes commands and returns output Most shells also manage foreground and background processes, command history and command line editing
Assigning default values to shell variables with a single command in . . . 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 🤗): summary table the variables in shell scripting can be in 3 states: assigned value (var=value) null string (var='') unset (unset var)
shell - What does -- (double dash double hyphen) mean? - Unix . . . More precisely, a double dash (--) is used in most Bash built-in commands and many other commands to signify the end of command options, after which only positional ("non-option") arguments are accepted Example use: Let's say you want to grep a file for the string -v Normally -v will be considered the option to reverse the matching meaning (only show lines that do not match), but with -- you