Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.eso.org/~qc/procs/VNC/uves.chkVNCserver Дата изменения: Wed Jan 30 16:37:44 2008 Дата индексирования: Sun Apr 13 19:20:07 2008 Кодировка:

#! /bin/sh

## "@(#) $Id: uves.chkVNCserver,v 1.3 2007/08/07 13:24:00 jpritcha Exp $"

################################################################################
## Definition of functions
usage() {
printf "\
Usage: ${execName} [-h|Dvnq] -n

Check VNC server : is running, if not start it.

-h|--help: help
-D|--debug: debug
-n|--dryRun: dry-run
-q|--quiet: quiet
-q Only Warnings and Errors are written out (to stderr)
-q -q increases quietness, only Errors are written out (to stderr)
-q -q -q increases quietness, NO output to stdout or stderr
-v|--verbose: verbose

-N|--number : multiple can be given, each one will be checked
for and started if necessary
-d|--depth : Color depth, default is ${depth}.
-g|--geom : desktop geometry, default is ${geom}
--RESTART: Stop then restart each server
--STOP: stop each server
"
exit ${exstat:-0}
}

verboseLog() {
[ ! -z "${vbose}" ] && echo "${execName}:: $1" > ${2:-/dev/stdout}
}

debugLog() {
[ ! -z "${debug}" ] && echo "${execName}::debug:: $1" > ${2:-/dev/stdout}
}

notQuietLog() {
[ -z "${quiet}" ] && echo "${execName}:: $1" > ${2:-/dev/stdout}
}

errorLog() {
[ ${quietLevel:-0} -lt 3 ] && echo "${execName}::Error:: $1" > ${2:-/dev/stderr}
}

warningLog() {
[ ${quietLevel:-0} -lt 2 ] && echo "${execName}::Warning:: $1" > ${2:-/dev/stderr}
}

execCmd() {
[ ! -z "${debug}" ] || [ ! -z ${dryRun} ] && echo "${execName}::execCmd:: $1"
[ -z "${dryRun}" ] && eval ${1}
}

################################################################################
## Usage:
## checkVarIsSet [error-message] [exit-status]
## : name of variable to check for, no '$'
## : fatal|fatalNoExit|warn
## [error-message]: Optional Error/Warning message to print
## [exit-status]: Optional exit status value
##
checkVarIsSet(){
v1="$`echo $1`"
v2="`eval echo $v1`"
debugLog "Variable $1 is set to $v2"
if [ -z "${v2}" ]; then
debugLog "Variable $1 is not set"
case $2 in
fatal) errorLog "${3:-Variable $1 not set}"; exstat=${4:-1} ; usage ;;
fatalNoExit) errorLog "${3:-Variable $1 not set}"; (( exstat=${exstat-0}+${4:-1} ));;
warn) warningLog "${3:-Variable $1 not set}";;
*) errorLog "*** Coding error:: error-level not recognised"; exit 1
esac
else
debugLog "Variable $1 is set to $v2"
fi
}
################################################################################

################################################################################
## Definition of variable who need default values
execName="`basename ${0}`"
quietLevel=0
depth=24
geom=1280x1024

################################################################################
## Command line options
while [ ! -z "${1}" ]; do

case $1 in
-h|--help) usage ; shift;;
-D|--debug) debug="-D"; quiet=""; vbose="-v"; quietLevel=0 ; shift;;
-n|--dryRun) dryRun="-n"; shift;;
-q|--quiet) quiet="-q"; vbose=""; debug=""; (( quietLevel++ )) ; shift;;
-v|--verbose) vbose="-v"; quiet=""; quietLevel=0 ; shift;;
-N|--number) Nums="${Nums} ${2}"; shift; shift;;
-d|--depth) depth="${2}"; shift; shift;;
-g|--geom) geom="${2}"; shift; shift;;
--RESTART) RESTART="--RESTART" ; shift ;;
--STOP) STOP="--STOP" ; shift ;;
*) exstat=1; usage; shift;;
esac
done

################################################################################
## Main loop starts...

exstat=0
checkVarIsSet Nums fatal

for N in $Nums ; do
AllProc="`ps axf | grep "Xvnc :${N} " | grep -v grep | cut -d: -f3- | awk '{print $3,$4}'`"
debugLog "AllProc ::"
debugLog "${AllProc}"
MyProc="`ps xf | grep "Xvnc :${N} " | grep -v grep | cut -d: -f3- | awk '{print $3,$4}'`"
debugLog "MyProc ::"
debugLog "${MyProc}"
if [ ! -z "${AllProc}" ]; then
if [ -z "${MyProc}" ]; then
errorLog "VNC server with number $N already running, but not owned by ${USER}"
exstat=1
else
if [ ! -z "${STOP}" ] || [ ! -z "${RESTART}" ]; then
verboseLog "Stopping VNC server $N"
vncserver -kill :$N
else
verboseLog "VNC server with number $N already running."
fi
fi
fi
if [ -z "${STOP}" ]; then
AllProc="`ps axf | grep "Xvnc :${N} " | grep -v grep | cut -d: -f3- | awk '{print $3,$4}'`"
debugLog "AllProc ::"
debugLog "${AllProc}"
MyProc="`ps xf | grep "Xvnc :${N} " | grep -v grep | cut -d: -f3- | awk '{print $3,$4}'`"
debugLog "MyProc ::"
debugLog "${MyProc}"
if [ -z "${AllProc}" ]; then
execCmd "vncserver :${N} -depth ${depth} -geometry ${geom}"
fi
fi
done

exit ${exstat:-0}