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

2 votes175 views1 answer
Change color of cmd windows 10
Shell/Bash
1 vote203 views1 answer
Nx test one file
Shell/Bash
12 votes212 views4 answers
Git how to undo a pushed commit
Shell/Bash
0 vote223 views1 answer
How to unzip gzip files in terminal
Shell/Bash
1 vote213 views2 answers
Install toastr in angular
Shell/Bash
14 votes203 views3 answers
Sed replace with newline
Shell/Bash
1 vote189 views3 answers
Nmap command to scan all open port kali linux
Shell/Bash
0 vote173 views1 answer
Grep example linux
Shell/Bash
0 vote193 views1 answer
Linux delete user password
Shell/Bash
11 votes203 views4 answers
Git pull all branches
Shell/Bash