examples/scripts.noah/bash_version.bash

   1 # bash_version.bash --- get major and minor components of bash version number
   2 # Author: Noah Friedman <friedman@prep.ai.mit.edu>
   3 # Created: 1993-01-26
   4 # Last modified: 1993-01-26
   5 # Public domain
   6
   7 # Converted to bash v2 syntax by Chet Ramey
   8
   9 # Commentary:
  10 # Code:
  11
  12 #:docstring bash_version:
  13 # Usage: bash_version {major|minor}
  14 #
  15 # Echo the major or minor number of this version of bash on stdout, or
  16 # just echo $BASH_VERSION if no argument is given.
  17 #:end docstring:
  18
  19 ###;;;autoload
  20 function bash_version ()
  21 {
  22     local major minor
  23
  24     case "$1" in
  25     major) echo "${BASH_VERSION/.*/}" ;;
  26     minor) major="${BASH_VERSION/.*/}"
  27            minor="${BASH_VERSION#${major}.}"
  28            echo "${minor%%.*}" ;;
  29     patchlevel) minor="${BASH_VERSION#*.*.}"
  30                 echo "${minor%(*}" ;;
  31     version) minor=${BASH_VERSION/#*.*./}
  32              echo ${BASH_VERSION/%.$minor/} ;;
  33     release) echo ${BASH_VERSION%(*} ;;
  34     build) minor="${BASH_VERSION#*.*.*(}"
  35            echo ${minor%)} ;;
  36     *) echo "${BASH_VERSION}" ;;
  37     esac
  38 }
  39
  40 provide bash_version
  41
  42 # bash_version.bash ends here