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#!/bin/bash
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#
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# CDM: The Console Display Manager
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#
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# Copyright (C) 2009, Daniel J Griffiths <ghost1227@archlinux.us>
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# Thanks to:
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# Andrwe..........beta-testing and submitting the fix for the all
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# important X incrementation function
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# brisbin33.......code cleanup
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# tigrmesh........finding a critical issue with the gnome-session handler
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# Profjim.........several incredibly useful patches
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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., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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name="Console Display Manager"
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ver="0.4.1"
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info="\e[1;34m==>\e[1;37m"
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error="\e[1;31m==>\e[1;37m"
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success="\e[1;32m==>\e[1;37m"
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reset="\e[0m"
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# Ignore SIGINT (^C) and SIGTSTP (^Z)
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trap "" 2 20
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# Source cdm configuration
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if [[ -f /etc/cdmrc ]]; then
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source /etc/cdmrc
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count=0
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while [[ ${count} -lt ${#userconfig[@]} ]]; do
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if [[ "$USER" == "${userconfig[${count}]}" ]]; then
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${userconfig[${count}]}
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fi
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let count=count+1
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done
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countfrom=${countfrom:-0}
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else
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echo -e "${error} ERROR: A valid cdm configuration was not found!${reset}"
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echo -e "${info} Logging out.${reset}"
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sleep 3
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exit 1
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fi
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unset DIALOGRC
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# Source theme file
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if [[ ! -z ${theme} ]]; then
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if [[ -f /usr/share/cdm/themes/${theme} ]]; then
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DIALOGRC=/usr/share/cdm/themes/${theme}
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else
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echo -e "${info} Theme file ${theme} is invalid, reverting to default theme.${reset}"
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fi
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fi
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if [[ -z $DIALOGRC ]]; then
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if [[ -f /usr/share/cdm/themes/default ]]; then
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DIALOGRC=/usr/share/cdm/themes/default
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else
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echo -e "${info} A valid theme file was not found, using system defaults.${reset}"
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fi
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fi
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### Based on FreeBSD's /etc/rc.subr
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##
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# checkyesno var
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# Test $1 variable, and warn if not set to YES or NO.
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# Return 0 if it's "yes" (et al), nonzero otherwise.
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# to make default yes, do "checkyesno var yes"
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checkyesno()
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{
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local value=${!1}
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# debug "checkyesno: $1 is set to $value."
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if [[ -n $2 ]]; then
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value=${value:-$2}
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else
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value=${value:-no}
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fi
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case $value in
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# "yes", "true", "on", or "1"
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[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
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return 0
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;;
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# "no", "false", "off", or "0"
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[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
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return 1
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;;
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*)
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echo "\$${1} is not set properly." >&2
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exit 1
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;;
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esac
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}
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# If X is already running and locktty=yes, activate it,
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# otherwise, increment.
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if $(checkyesno locktty); then
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# Verify display exists
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if [[ -n "${display//[0-9]/}" ]]; then
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display=0
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fi
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# Activate existing X session
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if xdpyinfo -display :${display}.0 &> /dev/null; then
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let tty=display+xtty
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chvt ${tty}
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exit 0
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fi
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else
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# Get the first empty display
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display=0
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while [[ ${display} -lt 7 ]]; do
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if xdpyinfo -display :${display}.0 &> /dev/null; then
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let display=display+1
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else
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break
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fi
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done
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fi
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mainmenu() {
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# Generate main menu
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count=0
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menu=$(
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while [[ ${count} -lt ${#wmdisplist[@]} ]]; do
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echo -ne "$((count+countfrom)) ${wmdisplist[${count}]} "
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let count=count+1
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done
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)
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# Check if console access is allowed
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if $(checkyesno allowconsole); then
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if ! $(checkyesno allowshutdown); then
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let halt=99
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fi
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let console=${#wmdisplist[@]}+countfrom
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menu="${menu} ${console} Console "
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fi
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# Check if shutdown access is allowed
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if $(checkyesno allowshutdown); then
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if ! $(checkyesno allowconsole); then
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let halt=${#wmdisplist[@]}
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else
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let halt=${#wmdisplist[@]}+1
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fi
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let halt=halt+countfrom
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menu="${menu} ${halt} Shutdown "
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fi
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# Override dialog display if only one option is available
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if ! $(checkyesno allowconsole) && ! $(checkyesno allowshutdown) && [[ ${#wmdisplist[@]} == 1 ]]; then
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wm=$countfrom
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else
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# Display selection dialog
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wm=$(
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DIALOGRC="$DIALOGRC" dialog --colors \
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--backtitle "${name} v${ver}" --stdout \
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--ok-label " Select " --cancel-label " Logout " \
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--menu "Select Window Manager" 0 0 0 ${menu}
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)
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if [[ $? != 0 ]]; then
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clear
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exit 0
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fi
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fi
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# Set wm_bin
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clear
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if [[ ${wm} -eq ${console} ]]; then
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exec ${SHELL}
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elif [[ ${wm} -eq ${halt} ]]; then
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shutdownmenu
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else
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let wm=wm-countfrom
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wm_bin="${wmbinlist[${wm}]}"
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xstart
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fi
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}
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shutdownmenu() {
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count=$countfrom
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haltmenu=$(
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for opt in Shutdown Reboot Suspend; do
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# Check if suspend is enabled
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if [[ $opt != Suspend ]] || $(checkyesno allowsuspend); then
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echo -ne "$count $opt "
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let count=count+1
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fi
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done
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)
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# Display shutdown dialog
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haltopt=$(
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DIALOGRC="$DIALOGRC" dialog --colors \
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--backtitle "${name} v${ver}" --stdout \
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--ok-label " Select " --cancel-label " Cancel " \
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--menu "Shutdown" 0 0 0 ${haltmenu}
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)
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if [[ $? == 0 ]]; then
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clear
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if [[ ${haltopt} -eq $countfrom ]]; then
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${shutdowncommand}
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elif [[ ${haltopt} -eq $((countfrom+1)) ]]; then
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${rebootcommand}
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else
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${suspendcommand}
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fi
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else
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mainmenu
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fi
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}
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xstart() {
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# Start X
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serverargs=":${display} ${serverargs} vt$((xtty+display))"
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if $(checkyesno loginshell); then
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if [[ ${wm_bin} == "gnome-session" ]]; then
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exec ck-launch-session bash --login -c "startx /usr/share/cdm/xinirc "$wm_bin" -- ${serverargs} &> /dev/null" &
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else
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exec bash --login -c "startx /usr/share/cdm/xinitrc "$wm_bin" -- ${serverargs} &> /dev/null" &
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fi
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else
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if [[ ${wm_bin} == "gnome-session" ]]; then
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exec ck-launch-session startx /usr/share/cdm/xinitrc $wm_bin -- ${serverargs} &> /dev/null &
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else
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exec startx /usr/share/cdm/xinitrc $wm_bin -- ${serverargs} &> /dev/null &
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fi
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fi
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}
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mainmenu
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