Unix Shell - Re: bourne sh scripting: how can I easily test if a given string occurs in one of a se

Author

Re: bourne sh scripting: how can I easily test if a given string occurs in one of a se

Michael Paoli

2006-09-21, 1:25 pm

Leonardo wrote:
> 2) how can I easily test if a given string occurs in one of a set of
> strings?
> My current method is:
>
> if [ "$STR" == `echo $STR | egrep '^(one|two|three)$'` ]; then
> echo "$STR is in (one two three)"
> fi
>
> I was wondering if there was a way without using regular expressions, rather
> a list (...), or more simple way.

$ if >>/dev/null 2>&1 fgrep string - << \__EOT__; then
> set
> of
> strings
> __EOT__
> echo matched
> else
> echo not matched
> false
> fi
matched
$ echo $?
0
$ if >>/dev/null 2>&1 fgrep yet_another_string - << \__EOT__; then
> set
> of
> strings
> __EOT__
> echo matched
> else
> echo not matched
> false
> fi
not matched
$ echo $?
1
$