- linux - What does $@ mean in a shell script? - Stack Overflow
What does a dollar sign followed by an at-sign (@) mean in a shell script? For example: umbrella_corp_options $@
- What is the $? (dollar question mark) variable in shell scripting?
I'm trying to learn shell scripting, and I need to understand someone else's code What is the $? variable hold? I can't Google search the answer because they block punctuation characters
- 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
- Difference between ${} and $() in a shell script - Super User
$(command) is “command substitution” As you seem to understand, it runs the command, captures its output, and inserts that into the command line that contains the $(…); e g , $ ls -ld $(date +%B) txt -rwxr-xr-x 1 Noob Noob 867 Jul 2 11:09 July txt ${parameter} is “parameter substitution” A lot of information can be found in the shell’s man page, bash (1), under the “ Parameter
- bash - Shell equality operators (=, ==, -eq) - Stack Overflow
Shell equality operators (=, ==, -eq) Asked 11 years, 6 months ago Modified 3 years ago Viewed 631k times
- regex - Meaning of =~ operator in shell script - Stack Overflow
Meaning of "=~" operator in shell script [duplicate] Asked 12 years, 9 months ago Modified 11 years, 10 months ago Viewed 95k times
- Bash Script : what does #! bin bash mean? - Stack Overflow
That is called a shebang, it tells the shell what program to interpret the script with, when executed In your example, the script is to be interpreted and run by the bash shell Some other example shebangs are: (From Wikipedia) #! bin sh — Execute the file using sh, the Bourne shell, or a compatible shell #! bin csh — Execute the file using csh, the C shell, or a compatible shell #! usr
- 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
|