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安裝中文字典英文字典辭典工具!
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- regex - Meaning of =~ operator in shell script - Stack Overflow
Meaning of "=~" operator in shell script [duplicate] Asked 13 years, 2 months ago Modified 12 years, 3 months ago Viewed 96k times
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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, 5 months ago Viewed 647k 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 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?
- shell - What does -- (double dash double hyphen) mean? - Unix . . .
In man bash we can read in Shell Builtin Commands section (online doc): Unless otherwise noted, each builtin command documented in this section as accepting options preceded by - accepts -- to signify the end of the options The :, true, false, and test builtins do not accept options and do not treat -- specially The exit, logout, break, continue, let, and shift builtins accept and process
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