Samba tutorial - Part 10

Backing Up Windows Machines to a Linux Host

Adam Neat ( adamneat@ipax.com.au) kindly contributed the following script to back up Windows machines to a Linux host, using the smbclient utility. Adam says that it is used to backup Windows 3.x and NT machines to a Linux based DAT SCSI Drive.

Adam is not proud of the coding style used here, but it works. As I like to say, "If it works and its stupid, then it is not stupid".

Another Windows backup script, contributed by Dan Tager ( dtager@marsala.com), is provided below. Dan's script also backs up Unix machines via rsh, although that could be modified to use ssh rather easily.

In this script, the string 'agnea1' is the username on the Linux machine that does the backups.

---

#!/bin/bash

clear
echo Initialising ...
checkdate=`date | awk '{print $1}'`

if [ -f "~agnea1/backup-dir/backup-data" ]; then

       echo "ERROR: No config file for today!"
       echo "FATAL!"
       exit 1
fi

if [ -d "~agnea1/backup-dir/temp" ]; then

       echo "ERROR: No tempoary directory found!"
       echo
       echo "Attempting to create"
       cd ~agnea1
       cd backup-dir
       mkdir temp
       echo "Directory Made - temp"
fi

if [ "$1" = "" ]; then

       echo "ERROR: enter in a machine name (ie: cdwriter)"
       exit 1
fi

if [ "$2" = "" ]; then

       echo "ERROR: enter in a SMB (Lan Manager) Resource (ie: work)"
       exit 1
fi

if [ "$3" = "" ]; then

       echo "ERROR: enter in an IP address for $1 (ie:
       130.xxx.xxx.52)" exit 1
fi


#############################################################################
# Main Section
#
#############################################################################

cd ~agnea1/backup-dir/temp
rm -r ~agnea1/backup-dir/temp/*
cd ~agnea1/backup-dir/

case "$checkdate"
in
       Mon)
               echo "Backuping for Monday"
               cat backup-data | /usr/local/samba/bin/smbclient
               \\\\$1\\$2 -I$3 -N echo "Complete"

                       if [ -d "~agnea1/backup-dir/Monday" ]; then
                               echo "Directory Monday Not found ...
                               making" mkdir
                               ~agnea1/backup-dir/Monday
                       fi

               echo "Archiving ..."
               cd ~agnea1/backup-dir/temp
               tar -cf monday.tar *                echo "done ..."
               rm ~agnea1/backup-dir/Monday/monday.tar
               mv monday.tar ~agnea1/backup-dir/Monday
               ;;


       Tue)
               echo "Backuping for Tuesday"
               cat backup-data | /usr/local/samba/bin/smbclient
               \\\\$1\\$2 -I$3 -N echo "Complete"

                       if [ -d "~agnea1/backup-dir/Tuesday" ]; then
                               echo "Directory Tuesday Not found ...
                               making" mkdir
                               ~agnea1/backup-dir/Tuesday
                       fi
               echo "Archiving ..."
               cd ~agnea1/backup-dir/temp
               tar -cf tuesday.tar *
               echo "done ..."
               rm ~agnea1/backup-dir/Tuesday/tuesday.tar
               mv tuesday.tar ~agnea1/backup-dir/Tuesday
               ;;

       Wed)
               echo "Backuping for Wednesday"
               cat backup-data | /usr/local/samba/bin/smbclient
               \\\\$1\\$2 -I$3 -N echo "Complete"

                       if [ -d "~agnea1/backup-dir/Wednesday" ]; then
                               echo "Directory Wednesday Not found
                               ... making" mkdir
                               ~agnea1/backup-dir/Wednesday
                       fi
               echo "Archiving ..."
               cd ~agnea1/backup-dir/temp
               tar -cf wednesday.tar *
               echo "done ..."
            rm ~agnea1/backup-dir/Wednesday/wednesday.tar
               mv wednesday.tar ~agnea1/backup-dir/Wednesday
               ;;

       Thu)
               echo "Backuping for Thrusday"
               cat backup-data | /usr/local/samba/bin/smbclient
               \\\\$1\\$2 -I$3 -N echo "Complete"

                       if [ -d "~agnea1/backup-dir/Thursday" ]; then
                               echo "Directory Thrusday Not found ...
                               making" mkdir
                               ~agnea1/backup-dir/Thursday
                       fi
               echo "Archiving ..."
               cd ~agnea1/backup-dir/temp
               tar -cf thursday.tar *
               echo "done ..."
               rm ~agnea1/backup-dir/Thursday/thursday.tar
               mv thursday.tar ~agnea1/backup-dir/Thursday
               ;;


       Fri)
               echo "Backuping for Friday"
               cat backup-data | /usr/local/samba/bin/smbclient
               \\\\$1\\$2 -I$3 -N echo "Complete"

                       if [ -d "~agnea1/backup-dir/Friday" ]; then
                               echo "Directory Friday Not found ...
                               making" mkdir
                               ~agnea1/backup-dir/Friday
                       fi
               echo "Archiving ..."
               cd ~agnea1/backup-dir/temp
               tar -cf friday.tar *
               echo "done ..."
               rm ~agnea1/backup-dir/Friday/friday.tar
               mv friday.tar ~agnea1/backup-dir/Friday
               ;;

       *)
               echo "FATAL ERROR: Unknown variable passed for day"
               exit 1;;

esac
###########

---

Here's Dan's backup script:

---

#!/bin/bash

BACKDIR=3D/backup
WINCMD=3D/usr/bin/smbclient

function CopyWinHost(){

# tars and gzips "windows shares" to a local directory using samba's
# smbclient
# argument 1 is the remote host window's host name
# argument 2 is the share name to be backed up

  echo $1,$2,$3
  REMOTE=3D$1
  SHARE=3D$2
  DEST=3D$3

# create a tarred gzip file using samba to copy direct from a
# windows pc
# 12345 is a password.  Needs some password even if not defined on
# remote system
  $WINCMD \\\\$REMOTE\\$SHARE 12345 -Tc -|gzip > $DEST
  echo `date`": Done backing up "$REMOTE" to "$DEST
  echo
}

function CopyUnixHost(){

# tars and gzips a directory using rsh
# argument 1 is the name of the remote source host
# argument 2 is the full path to the remote source directory
# argument 3 is the name of the local tar-gzip file.  day of week
#  plus .tgz will be appended to argument 3

  REMOTE=3D$1
  SRC=3D$2
  DEST=3D$3


  if rsh $REMOTE tar -cf - $SRC |gzip > $DEST; then
     echo `date`": Done backing up "$REMOTE":"$SRC" to "$DEST
  else
    echo `date`": Error backing up "$REMOTE":"$SRC" to "$DEST
  fi

}

# $1: win=3Dbackup windows machine, unix=3Dbackup unix machine
case $1 in
  win)
     # $2=3D remote windows name, $3=3Dremote share name,
     # $4=3Dlocal destination directory
     CopyWinHost $2 $3 $4;;
  unix)
     # $2 =3D remote host, $3 =3D remote directory,
     # $4 =3D destination name
     CopyUnixHost $2 $3 $4;;
esac