4 # Desc: Checks if string is a valid URL.
5 # Warning: Does not correctly handle multi-byte characters.
8 # Output: return code 0: string is a valid URL
9 # return code 1: string is NOT a valid URL
11 # Ref/Attrib: https://stackoverflow.com/a/3184819
12 regex
='(https?|ftp|file|ssh|git)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]'
14 if [[ $arg1 =~
$regex ]]; then
22 testString
="https://google.com/security.main.html"
23 if checkURL
"$testString"; then echo "Is a valid URL:$testString"; else echo "Is NOT a valid URL:$testString"; fi;
24 testString
="ssh://username@host.xz/absolute/path/to/repo.git/"
25 if checkURL
"$testString"; then echo "Is a valid URL:$testString"; else echo "Is NOT a valid URL:$testString"; fi;