一个备份脚本

#!/bin/bash
#
#Filename: CnsBackup.sh
#Author  : cnscn
#Time    : 2006-02-19 20:00
#Email   : [email protected]
#
#Purpos  : to tar and zip a file or dir and make the name of
#          current time, and then move it to the right directory
#
#Shell   : bash,bsh,sh
#
#Usage   : Usage: CnsBackup.sh <-n prefix_of_newname> <-f f1 f2 f3 f4 ...> [-m middir]  [-d aimdir] [-vh]
#
#Note    : the file name must give the absoulte path

#the usage function
function Usage()
{
   echo "  Usage: CnsBackup.sh [-i] <-n prefix_of_tarfilename>  <-f f1 f2 f3 f4 ...>  [-d aimdir] [-vh] "
   echo
    
   echo  "  Note:   the file name must give the absoulte path "
   echo

   echo "  Arguments:"
   echo "     [-i]                             tar in the file's directory"
   echo "     <-n   prefix_of_tarfilename>     the new tar file's prefix  flag"
   echo "     <-f   filename>                  the file name to be tared"
   echo "     [-d   aimdir]                    the directory to save the file tar file"
   echo "     [-m   middir]                    the middle dir the tar the file"
   echo "     [-v]                             show the version"
   echo "     [-h]                             show the help"

   echo
   echo "  Eaxmples:"
   echo "     CnsBackup.sh  -i  -n fileflag   -f  /xxx/xxx/file                              tar in current dir, and   save in  current dir"
   echo "     CnsBackup.sh  -i  -n fileflag   -f  /xxx/xxx/file   -d  /tmp                   tar in current dir, and   save in  aim     dir"
   echo "     CnsBackup.sh      -n fileflag   -f  /xxx/xxx/file   -d  /tmp                   tar in aim dir,     and   save in  aim     dir"
   echo "     CnsBackup.sh      -n fileflag   -f  /xxx/xxx/file   -d  /tmp   -m /backup/     tar in middle dir,  and   save in  aim     dir"
   echo
}

isTarInFilesDir='n'

#get the options
while getopts hvif:m:d:n:  OPTION
do
  case $OPTION
  in
    v)
        echo "CnsBackup.sh Version 1.0"
        ;;
    i)
        #if tar in the file's directory
        isTarInFilesDir="y"
        ;;
    f)
        f="$OPTARG"
        ;;
    m)
        #the middle dir
        middir="$OPTARG"
        ;;
   d)
        #the aim directory
        faimdir="$OPTARG"
        ;;
   n)
        #the new name
        tarname="$OPTARG"
        ;;
     ?)
         Usage
         exit
         ;;
   esac
done

if [ -z "$f" ] || [ -z  "$tarname" ] ; then
   Usage
   exit
fi

#get the time
time=$(date +%Y%m%d%H%M%S)

#get the file's directory
fbasedir=$( dirname $f )

#save in aim directory
if [ -n "$faimdir" ] && [ "." != "$faimdir" ] && [ "./" != "$faimdir" ]
then
   
   if [ "$fbasedir" == "$faimdir" ]
   then
       issamedir='Y'
    else
       issamedir='N'
    fi

    #the aim dir and the file's dir are not same
    if [ "$issamedir" == 'N' ] && [ "$isTarInFilesDir" != 'y' ]
    then
      
       if [ -n  "$middir" ]
       then
          cp  -fr  $f  ${middir}/
          cmdflag=$?    

          if [ 0 -ne "$cmdflag" ]
          then
              echo  "Copy to the aim directory false, please check the directory: $middir does exist..."
              exit 1
          fi
          cd  ${middir}
       else
          cp  -fr  $f  ${faimdir}/
          cmdflag=$?    

          if [ 0 -ne "$cmdflag" ]
          then
              echo  "Copy to the aim directory false, please check the directory: $faimdir does exist..."
              exit 1
          fi
          cd  ${faimdir}
      fi

     else
        cd $fbasedir
     fi

     tar -cjvf  $tarname"_"$time".tar.bz2"  $f 2>/dev/null

     if [ $? -eq 0 ]
     then
          echo "Tar ok..."
          if [ -n "$faimdir" ]
          then
              if  [ -z "$middir" ] || [ -n "$middir" ]  && [ "$middir" != "$faimdir" ]
              then
                  mv $tarname"_"$time".tar.bz2"  ${faimdir}/
                  if [ $? -ne 0 ]
                  then
                      echo "mv false..."
                      exit 1
                  fi
              fi
          fi
      else
          echo "Tar false..."
      fi

      if [ "$isTarInFilesDir"  != 'y' ]
      then
        rm -fr ${f}
        if [ $?  -ne 0 ]
        then
             echo "rm the tmp file false...."
             exit 1
        fi
      fi
else
    cd $fbasedir

    tar -cjvf  $tarname"_"$time".tar.bz2"  $f #2>/dev/null
    if [ $? -eq 0 ]
    then
         echo "Tar ok..."
    else
         echo "Tar false..."
    fi
fi