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 votes124 views2 answers
Dpkg install deb with dependencies
Shell/Bash
9 votes112 views3 answers
Curl get example
Shell/Bash
1 vote115 views1 answer
Trouble installing Virtualbox Guest Addtions in LM 19.3 VM
Shell/Bash
4 votes139 views3 answers
Git add, commit and push in one command
Shell/Bash
16 votes114 views3 answers
Git restore to remote
Shell/Bash
2 votes81 views1 answer
Apt install auto yes
Shell/Bash
0 vote122 views1 answer
Git add only c files
Shell/Bash
1 vote122 views1 answer
Linux saber la distribución terminal
Shell/Bash
0 vote114 views1 answer
How to make a text in batch
Shell/Bash
0 vote124 views2 answers
Git delete commit history
Shell/Bash