| #! /bin/sh |
| # $Id$ |
| # vim:et:ft=sh:sts=2:sw=2 |
| # |
| # Copyright 2008 Kate Ward. All Rights Reserved. |
| # Released under the LGPL (GNU Lesser General Public License) |
| # |
| # Author: kate.ward@forestent.com (Kate Ward) |
| # |
| # This library provides reusable functions that determine actual names and |
| # versions of installed shells and the OS. The library can also be run as a |
| # script if set execuatable. |
| |
| VERSIONS_SHELLS='/bin/bash /bin/dash /bin/ksh /bin/pdksh /bin/sh /bin/zsh' |
| |
| #------------------------------------------------------------------------------ |
| # functions |
| # |
| |
| versions_osName() |
| { |
| os_name_='unrecognized' |
| os_system_=`uname -s` |
| case ${os_system_} in |
| Cygwin) os_name_='Cygwin' ;; |
| Darwin) os_name_='Mac OS X' ;; |
| Linux) os_name_='Linux' ;; |
| SunOS) os_name_='Solaris' ;; |
| esac |
| echo ${os_name_} |
| unset os_name_ os_system_ |
| } |
| |
| versions_osVersion() |
| { |
| os_version_='unrecognized' |
| os_system_=`uname -s` |
| os_release_=`uname -r` |
| case ${os_system_} in |
| Cygwin) os_version_='unknown' ;; |
| Darwin) |
| major_='10' |
| sub_=`echo ${os_release_} |\ |
| sed 's/^[0-9]*\.\([0-9]*\)\.[0-9]*$/\1/'` |
| case ${os_release_} in |
| 8.*) minor_='4' ;; |
| 9.*) minor_='5' ;; |
| *) minor_='X'; sub_='X' ;; |
| esac |
| os_version_="${major_}.${minor_}.${sub_}" |
| ;; |
| Linux) |
| if [ -r '/etc/lsb-release' ]; then |
| os_version_=`. /etc/lsb-release && \ |
| echo "${DISTRIB_ID:-}-${DISTRIB_RELEASE:-}"` |
| fi |
| if [ "${os_version_}" = '-' ]; then |
| os_version_='' |
| if [ -r '/etc/redhat-release' ]; then |
| os_version_=`cat /etc/redhat-release` |
| fi |
| fi |
| ;; |
| SunOS) os_version_=`echo ${os_release_} |sed 's/[0-9]*\.\([0-9]*\)/\1/'` ;; |
| esac |
| echo ${os_version_} |
| unset os_name_ os_release_ os_version_ major_ minor_ sub_ |
| } |
| |
| versions_shellVersion() |
| { |
| shell_=$1 |
| |
| if [ ! -x "${shell_}" ]; then |
| echo 'not installed' |
| return |
| fi |
| |
| version_='' |
| case ${shell_} in |
| */sh) |
| # TODO(kward): fix this |
| ## this could be one of any number of shells. try until one fits. |
| #version_=`versions_shell_bash ${shell_}` |
| ## dash cannot be self determined yet |
| #[ -z "${version_}" ] && version_=`versions_shell_ksh ${shell_}` |
| ## pdksh is covered in versions_shell_ksh() |
| #[ -z "${version_}" ] && version_=`versions_shell_zsh ${shell_}` |
| ;; |
| */bash) version_=`versions_shell_bash ${shell_}` ;; |
| */dash) |
| # simply assuming Ubuntu Linux until somebody comes up with a better |
| # test. the following test will return an empty string if dash is not |
| # installed. |
| version_=`versions_shell_dash` |
| ;; |
| */ksh) version_=`versions_shell_ksh ${shell_}` ;; |
| */pdksh) version_=`versions_shell_pdksh ${shell_}` ;; |
| */zsh) version_=`versions_shell_zsh ${shell_}` ;; |
| *) version_='invalid' |
| esac |
| |
| echo ${version_:-unknown} |
| unset shell_ version_ |
| } |
| |
| versions_shell_bash() |
| { |
| $1 --version 2>&1 |grep 'GNU bash' |sed 's/.*version \([^ ]*\).*/\1/' |
| } |
| |
| versions_shell_dash() |
| { |
| dpkg -l |grep ' dash ' |awk '{print $3}' |
| } |
| |
| versions_shell_ksh() |
| { |
| versions_shell_=$1 |
| |
| versions_version_=`strings ${versions_shell_} 2>&1 \ |
| |grep Version \ |
| |sed 's/^.*Version \(.*\)$/\1/;s/ s+ \$$//;s/ /-/g'` |
| [ -z "${versions_version_}" ] \ |
| && versions_version_=`versions_shell_pdksh ${versions_shell_}` |
| echo ${versions_version_} |
| |
| unset versions_shell_ versions_version_ |
| } |
| |
| versions_shell_pdksh() |
| { |
| strings $1 2>&1 \ |
| |grep 'PD KSH' \ |
| |sed -e 's/.*PD KSH \(.*\)/\1/;s/ /-/g' |
| } |
| |
| versions_shell_zsh() |
| { |
| echo 'echo ${ZSH_VERSION}' |$1 |
| } |
| |
| #------------------------------------------------------------------------------ |
| # main |
| # |
| |
| versions_main() |
| { |
| # treat unset variables as an error |
| set -u |
| |
| os_name=`versions_osName` |
| os_version=`versions_osVersion` |
| echo "os: ${os_name} version: ${os_version}" |
| |
| for shell in ${VERSIONS_SHELLS}; do |
| shell_version=`versions_shellVersion ${shell}` |
| echo "shell: ${shell} version: ${shell_version}" |
| done |
| } |
| |
| if [ "`basename $0`" = 'versions' ]; then |
| versions_main "$@" |
| fi |