在实际开发中，版本上线是一个简单，但是非常重要的事，在正规的上线活动中，上线都是要提供上线脚本的，每次上线，都要写上线备份脚本，更新脚本，回退脚本，下面的脚本是根据更新文件列表，自动生成文件备份，更新，回退脚本
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[/home/gfront/ncup/package]$cat up.lst/home/gfront/ncup/bin/SwtEMU /appsw/gfront/ncup/bin/SwtEMU/home/gfront/ncup/lib/libDbs.so /appsw/gfront/ncup/lib/libDbs.so脚本
#/bin/kshfun_echo () { cnt=1 unset str while [ $cnt -lt `echo "$1" | wc -c` ] do str=$str~ cnt=`exPR $cnt + 1` done echo $str echo "$1" cnt=1 unset str while [ $cnt -lt `echo "$1" | wc -c` ] do str=$str~ cnt=`expr $cnt + 1` done echo $str}fun_usage () { echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~" echo "Purpose" echo " The update shell generating tools" echo echo "Syntax" echo " package listfile" echo echo "Listfile Format" echo " sourpath/sourfile [destpath/destfile]" echo " sourdir: The source path" echo " destdir: The destinate path" echo " sourfile: The source file" echo " destfile: The destnate file" echo echo "PS" echo " The [destpath/destfile] can be omitted." echo "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"}fun_fun_echo2file () { echo "fun_echo () {" >>$1 echo " cnt=1" >>$1 echo " unset str" >>$1 echo " while [ /$cnt -lt /`echo /"/$1/" | wc -c/` ]" >>$1 echo " do" >>$1 echo " str=/$str~" >>$1 echo " cnt=/`expr /$cnt + 1/`" >>$1 echo " done" >>$1 echo " echo /$str" >>$1 echo "" >>$1 echo " echo /"/$1/"" >>$1 echo "" >>$1 echo " cnt=1" >>$1 echo " unset str" >>$1 echo " while [ /$cnt -lt /`echo /"/$1/" | wc -c/` ]" >>$1 echo " do" >>$1 echo " str=/$str~" >>$1 echo " cnt=/`expr /$cnt + 1/`" >>$1 echo " done" >>$1 echo " echo /$str" >>$1 echo "}" >>$1}fun_echo2file () { echo "$2" >> $1}################################### main logic ##############################################################if [ $# != 1 ]then fun_usage exit 1;fiFILELIST=$1STAMP=`date +%Y%m%d%H%M%S`WORKDIR=`whoami`_updatepackage_${STAMP}mkdir $WORKDIR ${WORKDIR}/UPDATEBACKUPSH=${WORKDIR}/backup/.shBACKUPSHHEAD=${BACKUPSH}/.headBACKUPSHBODY=${BACKUPSH}/.bodyBACKUPSHTAIL=${BACKUPSH}/.tailtouch ${BACKUPSHHEAD} ${BACKUPSHBODY} ${BACKUPSHTAIL}UPDATESH=${WORKDIR}/update/.shUPDATESHHEAD=${UPDATESH}/.headUPDATESHBODY=${UPDATESH}/.bodyUPDATESHTAIL=${UPDATESH}/.tailtouch ${UPDATESHHEAD} ${UPDATESHBODY} ${UPDATESHTAIL}ROLLBACKSH=${WORKDIR}/rollback/.shROLLBACKSHHEAD=${ROLLBACKSH}/.headROLLBACKSHBODY=${ROLLBACKSH}/.bodyROLLBACKSHTAIL=${ROLLBACKSH}/.tailtouch ${ROLLBACKSHHEAD} ${ROLLBACKSHBODY} ${ROLLBACKSHTAIL}#backupfun_echo2file ${BACKUPSHHEAD} "#!/bin/sh"fun_echo2file ${BACKUPSHHEAD} ""fun_fun_echo2file ${BACKUPSHHEAD}fun_echo2file ${BACKUPSHHEAD} ""fun_echo2file ${BACKUPSHHEAD} "if [ -f ROLLBACK.OK ];then"fun_echo2file ${BACKUPSHHEAD} " fun_echo /"/`printf ///"SHELL[ %s ] is be runned,couldn't run again!!!///n///" `basename $ROLLBACKSH`/`/""fun_echo2file ${BACKUPSHHEAD} " exit 0"fun_echo2file ${BACKUPSHHEAD} "fi"fun_echo2file ${BACKUPSHHEAD} ""fun_echo2file ${BACKUPSHHEAD} "if [ -f UPDATE.OK ];then"fun_echo2file ${BACKUPSHHEAD} " fun_echo /"/`printf ///"SHELL[ %s ] is be runned,couldn't run again!!!///n///" `basename $UPDATESH`/`/""fun_echo2file ${BACKUPSHHEAD} " exit 0"fun_echo2file ${BACKUPSHHEAD} "fi"fun_echo2file ${BACKUPSHHEAD} ""fun_echo2file ${BACKUPSHHEAD} "if [ -f BACKUP.OK ];then"fun_echo2file ${BACKUPSHHEAD} " fun_echo /"/`printf ///"SHELL[ %s ] is be runned,couldn't run again!!!///n///" `basename $BACKUPSH`/`/""fun_echo2file ${BACKUPSHHEAD} " exit 0"fun_echo2file ${BACKUPSHHEAD} "fi"fun_echo2file ${BACKUPSHHEAD} ""fun_echo2file ${BACKUPSHHEAD} "mkdir BACKUP"fun_echo2file ${BACKUPSHHEAD} ""#updatefun_echo2file ${UPDATESHHEAD} "#!/bin/sh"fun_echo2file ${UPDATESHHEAD} ""fun_fun_echo2file ${UPDATESHHEAD}fun_echo2file ${UPDATESHHEAD} ""fun_echo2file ${UPDATESHHEAD} "if [ ! -f BACKUP.OK ];then"fun_echo2file ${UPDATESHHEAD} " fun_echo /"/`printf ///"please run SHELL[ %s ],first!!!///n///" `basename $BACKUPSH`/`/""fun_echo2file ${UPDATESHHEAD} " exit 0"fun_echo2file ${UPDATESHHEAD} "fi"fun_echo2file ${UPDATESHHEAD} ""fun_echo2file ${UPDATESHHEAD} "if [ -f ROLLBACK.OK ];then"fun_echo2file ${UPDATESHHEAD} " fun_echo /"/`printf ///"SHELL[ %s ] is be runned,couldn't run again!!!///n///" `basename $ROLLBACKSH`/`/""fun_echo2file ${UPDATESHHEAD} " exit 0"fun_echo2file ${UPDATESHHEAD} "fi"fun_echo2file ${UPDATESHHEAD} ""fun_echo2file ${UPDATESHHEAD} "if [ -f UPDATE.OK ];then"fun_echo2file ${UPDATESHHEAD} " fun_echo /"/`printf ///"SHELL[ %s ] is be runned,couldn't run again!!!///n///" `basename $UPDATESH`/`/""fun_echo2file ${UPDATESHHEAD} " exit 0"fun_echo2file ${UPDATESHHEAD} "fi"fun_echo2file ${UPDATESHHEAD} ""#rollbackfun_echo2file ${ROLLBACKSHHEAD} "#!/bin/sh"fun_fun_echo2file ${ROLLBACKSHHEAD}fun_echo2file ${ROLLBACKSHHEAD} ""fun_echo2file ${ROLLBACKSHHEAD} "if [ ! -f UPDATE.OK ];then"fun_echo2file ${ROLLBACKSHHEAD} " fun_echo /"/`printf ///"Didn't run SHELL[ %s ], not need to rollback!!!///n///" `basename $UPDATESH`/`/""fun_echo2file ${ROLLBACKSHHEAD} " exit 0"fun_echo2file ${ROLLBACKSHHEAD} "fi"fun_echo2file ${ROLLBACKSHHEAD} ""fun_echo2file ${ROLLBACKSHHEAD} "if [ -f ROLLBACK.OK ];then"fun_echo2file ${ROLLBACKSHHEAD} " fun_echo /"/`printf ///"SHELL[ %s ] is be runned,couldn't run again!!!///n///" `basename $ROLLBACKSH`/`/""fun_echo2file ${ROLLBACKSHHEAD} " exit 0"fun_echo2file ${ROLLBACKSHHEAD} "fi"fun_echo2file ${ROLLBACKSHHEAD} ""cat $FILELIST | grep -v "^ *#" | sed 's/^ *//g' | sed 's/ *$//g' | while read SOUR DESTdo if [ "$SOUR" = "" ] then continue; fi SOURDIR=`dirname $SOUR` SOURFILE=`basename $SOUR` if [ "$DEST" = "" ] then DESTDIR=$SOURDIR DESTFILE=$SOURFILE else DESTDIR=`dirname $DEST` DESTFILE=`basename $DEST` fi #echo SOURDIR[$SOURDIR] SOURFILE[$SOURFILE] DESTDIR[$DESTDIR] DESTFILE[$DESTFILE] if [ -f ${SOURDIR}/${SOURFILE} ];then cp ${SOURDIR}/${SOURFILE} $WORKDIR/UPDATE/${DESTFILE} # backup fun_echo2file ${BACKUPSHBODY} "if [ -f /"${DESTDIR}/${DESTFILE}/" ];then" fun_echo2file ${BACKUPSHBODY} " cp /"${DESTDIR}/${DESTFILE}/" /"BACKUP/${DESTFILE}.${STAMP}/"" fun_echo2file ${BACKUPSHBODY} " fun_echo /"/`printf ///"[ %-40s ] backup to [ %-50s ].///n///" ${DESTDIR}/${DESTFILE} ///`pwd///`/BACKUP/${DESTFILE}.${STAMP}/`/"" fun_echo2file ${BACKUPSHBODY} "else" fun_echo2file ${BACKUPSHBODY} " if [ ! -d /"${DESTDIR}/" ];then" fun_echo2file ${BACKUPSHBODY} " rm -rf BACKUP" fun_echo2file ${BACKUPSHBODY} " fun_echo /"/`printf ///"ERROR:[ %s ] is a refresh path, but it not exists, backup failed!!!///n///" ${DESTDIR}/`/"" fun_echo2file ${BACKUPSHBODY} " exit 0" fun_echo2file ${BACKUPSHBODY} " fi" fun_echo2file ${BACKUPSHBODY} " fun_echo /"/`printf ///"[ %s ] is a new file, no need to bakcup.///n///" ${DESTDIR}/${DESTFILE}/`/"" fun_echo2file ${BACKUPSHBODY} "fi" fun_echo2file ${BACKUPSHBODY} "" # update fun_echo2file ${UPDATESHBODY} "rm -f ${DESTDIR}/${DESTFILE}" fun_echo2file ${UPDATESHBODY} "cp /"UPDATE/${DESTFILE}/" /"${DESTDIR}/${DESTFILE}/"" fun_echo2file ${UPDATESHBODY} "fun_echo /"/`printf ///"[ %-40s ] update complated.///n///" ${DESTDIR}/${DESTFILE}/`/"" fun_echo2file ${UPDATESHBODY} "" # rollback fun_echo2file ${ROLLBACKSHBODY} "rm -f /"${DESTDIR}/${DESTFILE}/"" fun_echo2file ${ROLLBACKSHBODY} "if [ -f /"BACKUP/${DESTFILE}.${STAMP}/" ];then" fun_echo2file ${ROLLBACKSHBODY} " cp /"BACKUP/${DESTFILE}.${STAMP}/" /"${DESTDIR}/${DESTFILE}/"" fun_echo2file ${ROLLBACKSHBODY} " fun_echo /"/`printf ///"[ %-40s ] is recoveryed.///n///" ${DESTDIR}/${DESTFILE}/`/"" fun_echo2file ${ROLLBACKSHBODY} "else" fun_echo2file ${ROLLBACKSHBODY} " fun_echo /"/`printf ///"[ %-40s ] is removed.///n///" ${DESTDIR}/${DESTFILE}/`/"" fun_echo2file ${ROLLBACKSHBODY} "fi" fun_echo2file ${ROLLBACKSHBODY} "" fun_echo "`printf /"[ %s ] package complated./n/" ${SOURDIR}/$SOURFILE`" else fun_echo "`printf /"ERROR:DIRECTORY [%-20s] or FILE [ %s ] is not exist!/n/" $SOURDIR $SOURFILE`" rm -rf $WORKDIR exit 0 fidonefun_echo2file ${BACKUPSHTAIL} "touch BACKUP.OK"fun_echo2file ${UPDATESHTAIL} "touch UPDATE.OK"fun_echo2file ${ROLLBACKSHTAIL} "touch ROLLBACK.OK"cat ${BACKUPSHHEAD} ${BACKUPSHBODY} ${BACKUPSHTAIL} > ${BACKUPSH}cat ${UPDATESHHEAD} ${UPDATESHBODY} ${UPDATESHTAIL} > ${UPDATESH}cat ${ROLLBACKSHHEAD} ${ROLLBACKSHBODY} ${ROLLBACKSHTAIL} > ${ROLLBACKSH}chmod +x ${BACKUPSH} ${UPDATESH} ${ROLLBACKSH}rm -f ${BACKUPSHHEAD} ${BACKUPSHBODY} ${BACKUPSHTAIL}rm -f ${UPDATESHHEAD} ${UPDATESHBODY} ${UPDATESHTAIL}rm -f ${ROLLBACKSHHEAD} ${ROLLBACKSHBODY} ${ROLLBACKSHTAIL}tar cvf ${WORKDIR}.tar $WORKDIR 1>/dev/nullcompress ${WORKDIR}.tarrm -rf $WORKDIR可以使用下面的操作，替换大量的echo，更美观些。
cat <<EOF >file ...EOF新闻热点
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