Closed ale5000-git closed 1 month ago
# $1: haystack $2: needle
printpos() {
[ -z "${2-}" ] && echo 0 ||
{ set -- "$1" "${1%%"$2"*}" && [ "$1" != "$2" ] && echo ${#2}; }
}
This prints 0-based pos of $2 in $1, or error if $2 is not a substring of $1.
Works perfectly, thanks.
With Bash I can get the position by using :
echo '012my_substring345' | grep -F -o -b -- 'my_substring'
Is there a way to get it on busybox? (possibly sticking to POSIX code)