linux下shell脚本备份文件的方法实现_linux shell_

#!/bin/bash v_time=`date "+%Y-%m-%d %H:%M:%S"` bakstr="[Start auto backup gitlab data:]"${v_time} logfile="/home/localgitlab/test/auto_back.txt" echo >> $logfile echo $bakstr >> $logfile pathSrc="/home/localgitlab/disk_new/backup" filesSrc=$(ls $pathSrc) pathDst="/media/localgitlab/a1df1b08-ae43-45ea-8067-994497738cb2/backups" filesDst=$(ls $pathDst) nSrcFileCount=0 ### Backup file: The file that determines the original path is not in the target path,  ### and is not copied. for filename in $filesSrc do     nSrcFileCount=$(( $nSrcFileCount + 1 ))     need_copy="yes"     for dstfile in $filesDst     do         if [ $filename == $dstfile ];then             need_copy="no"         fi     done     if [ $need_copy == 'yes' ];then             echo $filename " need backup" >> $logfile         strCompletePath=${pathSrc}'/'${filename}         cp $strCompletePath $pathDst         if [ $? -eq 0 ]; then             echo "copy file success" >> $logfile         else             echo "copy file fail" >> $logfile         fi     else         echo $filename " not need backup" >> $logfile     fi done echo "Src dir have file count:" $nSrcFileCount >> $logfile ### Keep only data within 180 days delSrc=$(find $pathSrc -type f -mtime +180) for delfilename in $delSrc do     echo "Need delete file: " $delfilename >> $logfile     rm -f $delfilename     if [ $? -eq 0 ]; then         echo "delete file success" >> $logfile     else         echo "delete file fail" >> $logfile     fi done