- 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
- 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
- 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, 7 months ago Modified 3 years, 1 month ago Viewed 634k times
- 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
- shell - How to concatenate string variables in Bash - Stack Overflow
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 distros), or certain other shells like the bin sh provided on FreeBSD
- How to represent multiple conditions in a shell if statement?
How to represent multiple conditions in a shell if statement? Asked 14 years, 10 months ago Modified 3 years, 5 months ago Viewed 1 2m times
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