/usr/bin/smbtar is in smbclient 2:3.6.25-0ubuntu0.12.04.10.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | #!/bin/sh
#
# smbtar script - front end to smbclient
#
# Authors: Martin.Kraemer <Martin.Kraemer@mch.sni.de>
#          and Ricky Poulten (ricky@logcam.co.uk)
#
# (May need to change shell to ksh for HPUX or OSF for better getopts)
#
# sandy nov 3 '98 added -a flag
#
# Richard Sharpe, added -c 'tarmode full' so that we back up all files to
# fix a bug in clitar when a patch was added to stop system and hidden files
# being backed up.
case $0 in
    # when called by absolute path, assume smbclient is in the same directory
    /*)
	SMBCLIENT="`dirname $0`/smbclient";;
    *)  # you may need to edit this to show where your smbclient is
	SMBCLIENT="smbclient";;
esac
# These are the default values. You could fill them in if you know what
# you're doing, but beware: better not store a plain text password!
server=""
service="backup"            # Default: a service called "backup"
password=""
username=$LOGNAME           # Default: same user name as in *nix
verbose="2>/dev/null"        # Default: no echo to stdout
log="-d 2"
newer=""
newerarg=""
blocksize=""
blocksizearg=""
clientargs="-c 'tarmode full'"
tarcmd="c"
tarargs=""
cdcmd="\\"
tapefile=${TAPE-tar.out}
Usage(){
    ex=$1
    shift
echo >&2 "Usage: `basename $0` [<options>] [<include/exclude files>]
Function: backup/restore a Windows PC directories to a local tape file
Options:         (Description)                 (Default)
  -r             Restore from tape file to PC  Save from PC to tapefile
  -i             Incremental mode              Full backup mode
  -a             Reset archive bit mode        Don't reset archive bit
  -v             Verbose mode: echo command    Don't echo anything
  -s <server>    Specify PC Server             $server
  -p <password>  Specify PC Password           $password
  -x <share>     Specify PC Share              $service
  -X             Exclude mode                  Include
  -N <newer>     File for date comparison      `set -- $newer; echo $2`
  -b <blocksize> Specify tape's blocksize      `set -- $blocksize; echo $2`
  -d <dir>       Specify a directory in share  $cdcmd
  -l <log>       Specify a Samba Log Level     `set -- $log; echo $2`
  -u <user>      Specify User Name             $username
  -t <tape>      Specify Tape device           $tapefile
"
  echo >&2 "$@"
  exit $ex
}
# echo Params count: $#
# DEC OSF AKA Digital UNIX does not seem to return a value in OPTIND if 
# there are no command line params, so protect us against that ...
if [ $# = 0 ]; then
  Usage 2 "Please enter a command line parameter!"
fi
while getopts riavl:b:d:N:s:p:x:u:Xt: c; do
  case $c in
   r) # [r]estore to Windows (instead of the default "Save from Windows")
      tarcmd="x"
      ;;
   i) # [i]ncremental
      tarargs=${tarargs}ga
      clientargs="-c 'tarmode inc'"
      ;;
   a) # [a]rchive
      tarargs=${tarargs}a
      ;;
   l) # specify [l]og file
      log="-d $OPTARG"
      case "$OPTARG" in
	[0-9]*) ;;
	*)      echo >&2 "$0: Error, log level not numeric: -l $OPTARG"
		exit 1
      esac
      ;;
   d) # specify [d]irectory to change to in server's share
      cdcmd="$OPTARG"
      ;;
   N) # compare with a file, test if [n]ewer
      if [ -f $OPTARG ]; then
	newer=$OPTARG
	newerarg="N"
      else
	echo >&2 $0: Warning, $OPTARG not found
      fi
      ;;
   X) # Add exclude flag
      tarargs=${tarargs}X
      ;;
   s) # specify [s]erver's share to connect to - this MUST be given.
      server="$OPTARG"
      ;;
   b) # specify [b]locksize
      blocksize="$OPTARG"
      case "$OPTARG" in
	[0-9]*) ;;
	*)      echo >&2 "$0: Error, block size not numeric: -b $OPTARG"
		exit 1
      esac
      blocksizearg="b"
      ;;
   p) # specify [p]assword to use
      password="$OPTARG"
      ;;
   x) # specify windows [s]hare to use
      service="$OPTARG"
      ;;
   t) # specify [t]apefile on local host
      tapefile="$OPTARG"
      ;;
   u) # specify [u]sername for connection
      username="$OPTARG"
      ;;
   v) # be [v]erbose and display what's going on
      verbose=""
      ;;
   '?') # any other switch
       Usage 2 "Invalid switch specified - abort."
      ;;
  esac
done
shift `expr $OPTIND - 1`
if [ "$server" = "" ] || [ "$service" = "" ]; then
  Usage 1 "No server or no service specified - abort."
fi
# if the -v switch is set, the echo the current parameters
if [ -z "$verbose" ]; then
      echo "server    is $server"
#     echo "share     is $service"
      printf "share     is %s\\%s\n" "$service" "$cdcmd"
      echo "tar args  is $tarargs"
#     echo "password  is $password"  # passwords should never be sent to screen
      echo "tape      is $tapefile"
      echo "blocksize is $blocksize"
fi
tarargs=${tarargs}${blocksizearg}${newerarg}
eval $SMBCLIENT "'\\\\$server\\$service'" "'$password'" -U "'$username'" \
-E $log -D "'$cdcmd'" ${clientargs} \
-T${tarcmd}${tarargs} $blocksize $newer $tapefile '${1+"$@"}' $verbose
 |