Difference between ${} and $() in a shell script - Super User
Difference between $ {} and $ () in a shell script Ask Question Asked 10 years, 7 months ago Modified 12 months ago
Shell scripting: -z and -n options with if - Unix & Linux Stack Exchange
Jan 20, 2025 · You can find a very nice reference for bash's [ aka test builtin's operators here, or by running help test in a bash shell or info bash test or info bash '[' from any shell¹. If you are using a …
What is the meaning of $? in a shell script? - Unix & Linux Stack …
Feb 20, 2011 · When going through one shell script, I saw the term "$?". What is the significance of this term?
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.
Linux Bash Shell Script Error: cannot execute: required file not found
Oct 21, 2022 · $ dos2unix script $ ./script harpo.local Regarding your code: Please never do echo `some-command` or echo $(some-command) to output the output of some-command. Just use the …
What does -f mean in an if statement in a bash script?
Jul 5, 2018 · The relevant man page to check for this is that of the shell itself, bash, because -f is functionality that the shell provides, it's a bash built-in. On my system (CentOS 7), the fine man page …
bash - Confusing use of && and - Unix & Linux Stack Exchange
When running a few iterations to set variables or to create files etc., life is easier and the script looks slicker using the single line if function, it's only drawback is that it becomes a bit more difficult to …
shell script - Loop through a folder and list files - Unix & Linux ...
I have a folder named 'sample' and it has 3 files in it. I want to write a shell script which will read these files inside the sample folder and post it to an HTTP site using curl. I have written ...
Difference between [ [ ]] AND [ ] or ( ( )) AND ( ) in Bash
Mar 19, 2020 · In particular: [ is not aware if you quoted any of its arguments, it gets arguments after the shell removes quotes. Unquoted and unescaped && or || between [ and ] is not interpreted as an …
Linux Bash Script, Single Command But Multiple Lines?
Linux Bash Script, Single Command But Multiple Lines? Ask Question Asked 13 years, 2 months ago Modified 2 years, 9 months ago