BASH: Pattern match not working -


i using bash 3.2. can execute following command line:

$ build_number=23332 $ if [[ $build_number != +([0-9]) ]] > > echo "bad build number ($build_number). no cpu time you!" > else > echo "build number ($build_number) numeric" > fi build number (2332) numeric"

if change build_number to23332a`, returns:

bad build number (23332a). no cpu time you!

now, i'll try put shell script:

#! /bin/bash ... # # set options # while getopts :hu:j:b:p: option     case $option in         p)  promotion_name="$optarg";;         u)  jenkins_url="$optarg";;         j)  job_name="$optarg";;         b)  build_number="$optarg"             if [[ $build_number != +([0-9]) ]]                             error "build number must numeric"             fi         ;;         h)  printf "\n$usage\n"             exit 0;;         *)  error "invalid argument";;     esac done shift $(( $optind - 1 ))

when try execute program, following error:

$ ./promotion.sh -b 238d -jasdad ./promotion.sh: line 55: syntax error in conditional expression: unexpected token `(' ./promotion.sh: line 55: syntax error near `+([' ./promotion.sh: line 55: `      if [[ $build_number != +([0-9]) ]]'

so, doing wrong?

you need enable extended globbing:

shopt -s extglob

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