Shell trim

STR="${STR//(^[ ]+|[ ]+$)/}"

# ${STR//--regex--/--replacement--} = replace all
# ${STR/--regex--/--replacement--} = replace one
# ^[ ]+ = empty character([ ])s(+) at the start(^) of the string
# [ ]+$ = empty character([ ])s(+) at the end($) of the string
# (A|B) = A or B

Similar codes

-1 vote179 views1 answer
How to upgrade snap packages
Shell/Bash
8 votes177 views2 answers
Dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart
Shell/Bash
6 votes172 views2 answers
Install only dependencies npm
Shell/Bash
5 votes216 views1 answer
Command to get number of commits
Shell/Bash
2 votes135 views1 answer
Install from github pip
Shell/Bash
0 vote177 views1 answer
Install composer package from github
Shell/Bash
1 vote200 views2 answers
Gatsby plugin image
Shell/Bash
0 vote171 views1 answer
Backup Restore and Upgrade Gitlab
Shell/Bash
3 votes168 views1 answer
Powershell if operator
Shell/Bash
15 votes191 views6 answers
Delete dir linux
Shell/Bash