Bash "=~" example

$ [[ 45 =~ [0-9]+ ]] && echo "45 contains digits"
45 contains digits

$ [[ "hello" =~ [0-9]+ ]] && echo "hello doesnt contains digits"
$ [[ "hello" =~ [a-z]+ ]] && echo "hello contains alphabets"
hello contains alphabets

Source: stackoverflow.com

Similar codes

3 votes363 views2 answers
Install packet tracer on ubuntu
Shell/Bash
0 vote236 views1 answer
Add features for wsl linux
Shell/Bash
0 vote317 views2 answers
Add/push file in git
Shell/Bash
0 vote246 views2 answers
How to check if a string is null or empty in PowerShell?
Shell/Bash
0 vote317 views1 answer
How do confirm a commit revert git
Shell/Bash
1 vote236 views1 answer
Pipenv not found after pip3 install
Shell/Bash
27 votes267 views5 answers
Install cypress
Shell/Bash
3 votes239 views7 answers
Pm2 install
Shell/Bash
17 votes262 views6 answers
Mongodb install ubuntu
Shell/Bash
5 votes243 views2 answers
Git diff of a file between two commits
Shell/Bash