Bash regex if condition

Use following structure:
if [[ $digit =~ [0-9] ]]; then //run if a digit included in $digit string
    echo "$digit is a digit"
else
    echo "oops"
fi

Similar codes

5 votes248 views2 answers
Get custom fields in result of mongodb query
Shell/Bash
-3 votes225 views3 answers
Mongodb get all users
Shell/Bash
58 votes235 views1 answer
How to edit old commit message in git
Shell/Bash
0 vote232 views1 answer
Dependency problems - leaving unconfigured Errors were encountered while processing:
Shell/Bash
3 votes220 views1 answer
Set path environment variable mac permanently
Shell/Bash
0 vote239 views1 answer
Loading hard disk driver in rhel 8
Shell/Bash
33 votes233 views6 answers
Install docker-compose ubuntu
Shell/Bash
0 vote218 views3 answers
Is unix an open source operating system
Shell/Bash
0 vote233 views1 answer
How to uninstall aws cli
Shell/Bash
0 vote241 views1 answer
The upstream branch of your current branch does not match the name of your current branch.
Shell/Bash