153 lines
4.1 KiB
Bash
Executable File
153 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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################################################################################
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# #
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# Copyright (C) 2014 Jack-Benny Persson <jack-benny@cyberinfo.se> #
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# #
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# This program is free software; you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation; either version 2 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program; if not, write to the Free Software #
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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# #
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################################################################################
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# shellchooser
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Version="0.1"
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Author="Jack-Benny Persson (jack-benny@cyberinfo.se)"
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# Binaries
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Which="/usr/bin/which"
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# Binaries entered in the list will be avalible to the script as variables with
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# the first letter uppercase
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Binaries=(clear cp printf cat mktemp rm tail dialog diff)
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# Variables
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BashFiles="/etc/shellchooser/bashfiles"
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CshFiles="/etc/shellchooser/cshfiles"
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DashFiles="/etc/shellchooser/ashfiles"
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### Functions ###
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# Print version information
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print_version()
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{
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$Printf "\n\n$0 - $Version\n"
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}
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# Print help information
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print_help()
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{
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print_version
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$Printf "$Author\n"
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$Printf "Shell Chooser\n"
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/bin/cat <<-EOT
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Options:
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-h
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Print detailed help screen
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-V
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Print version information
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EOT
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}
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# Create our chooser dialog and return 1 if user aborted the dialog (if the
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# the user hits esc or cancel). Otherwise return 0.
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chooser()
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{
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Temp=`$Mktemp -t chooser.XXXX`
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$Dialog --backtitle "Shell Chooser" \
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--menu "Choose your shell" 10 60 3 "/bin/bash" Bash \
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"/bin/ash" Ash "/bin/csh" Csh 2> $Temp
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if [ $? -ne 0 ]; then
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return 1
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fi
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Shell=`$Cat $Temp`
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}
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# Check out environment variables and if they have changed, replace
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# them them with the original files
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check_env()
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{
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case $Shell in
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"/bin/bash")
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$Diff ${HOME}/.profile ${BashFiles}/profile &> /dev/null
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if [ $? -ne 0 ]; then
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$Cp ${BashFiles}/profile ${HOME}/.profile
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fi
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$Diff ${HOME}/.bashrc ${BashFiles}/bashrc &> /dev/null
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if [ $? -ne 0 ]; then
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$Cp ${BashFiles}/bashrc ${HOME}/.bashrc
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fi
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;;
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"/bin/csh")
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$Diff ${HOME}/.cshrc ${CshFiles}/cshrc &> /dev/null
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if [ $? -ne 0 ]; then
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$Cp ${CshFiles}/cshrc ${HOME}/.cshrc
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fi
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;;
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"/bin/ash")
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$Diff ${HOME}/.profile ${AshFiles}/profile
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if [ $? -ne 0 ]; then
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$Cp ${AshFiles}/profile ${HOME}/.profile
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fi
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esac
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}
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# Create variables with absolute path to binaries and check
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# if we can execute it (binaries will be avaliable in
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# variables with first character uppercase, such as Grep)
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Count=0
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for i in ${Binaries[@]}; do
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$Which $i &> /dev/null
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if [ $? -eq 0 ]; then
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declare $(echo ${Binaries[$Count]^}=`${Which} $i`)
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((Count++))
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else
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echo "It seems you don't have ${Binaries[$Count]} installed"
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exit 1
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fi
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done
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# Parse command line options and arguments
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while getopts Vh Opt; do
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case "$Opt" in
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h) print_help
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exit 0
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;;
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V) print_version
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exit 0
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;;
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*) short_help
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exit 1
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;;
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esac
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done
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### Main ###
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chooser
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if [ $? -ne 0 ]; then
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echo "Aborting..."
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exit 1
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fi
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check_env
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$Clear
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$Shell
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# Clean up
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$Rm $Temp
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exit 0
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