+#!/bin/sh
+#
+# Run this script as root on the machine that has the tape drive, to make a
+# level-1 dump containing all files changed since the last full dump.
+#
+# If you give `now' as an argument, the dump is done immediately.
+# Otherwise, it waits until 1am.
+#
+# You must edit the file `backup-specs' to set the parameters for your site.
+
+if [ ! -w / ]; then
+ echo The backup must be run as root,
+ echo or else some files will fail to be dumped.
+ exit 1
+else
+ false
+fi
+
+# Get the values of BACKUP_DIRS and BACKUP_FILES, and other variables.
+. ./backup-specs
+
+# Maybe sleep until around specified or default hour.
+#
+if [ "$1" != "now" ]; then
+ if [ "$1"x != x ]; then
+ spec=$1
+ else
+ spec=$BACKUP_HOUR
+ fi
+ pausetime=`date | awk '{hr=substr($4,1,2);\\
+ mn=substr($4,4,2);\\
+ if((hr+0)<spec+0)\\
+ print 3600*(spec-hr)-60*mn;\\
+ else\\
+ print 3600*(spec+(24-hr))-60*mn; }' spec=$spec`
+ clear
+ cat ./dont_touch
+ sleep $pausetime
+fi
+
+# start doing things
+
+here=`pwd`
+LOGFILE=log-`date | awk '{print $2 "-" $3 "-" $6}'`-level-1
+HOST=`hostname | sed 's/\..*//'`
+TAR_PART1="/usr/local/bin/tar -c --multi-volume --one-file-system --block=$BLOCKING --sparse --volno-file=$VOLNO_FILE" --atime-preserve
+
+# Make sure the log file did not already exist. Create it.
+
+if [ -f $LOGFILE ] ; then
+ echo Log file $LOGFILE already exists.
+ exit 1
+else
+ touch $LOGFILE
+fi
+
+mt -f $TAPE_FILE rewind
+rm $VOLNO_FILE
+
+set $BACKUP_DIRS
+while [ $# -ne 0 ] ; do
+ host=`echo $1 | sed 's/:.*$//'`
+ fs=`echo $1 | sed 's/^.*://'`
+ date=`date`
+ fsname=`echo $1 | sed 's/\//:/g'`
+
+# This filename must be absolute; it is opened on the machine that runs tar.
+ TAR_PART2="--listed=/etc/tar-backup/temp.level-1"
+ TAR_PART3="--label='level 1 backup of $fs on $host at $date' -C $fs ."
+
+ echo Backing up $1 at $date | tee -a $LOGFILE
+ echo Last full dump on this filesystem: | tee -a $LOGFILE
+
+ if [ $HOST != $host ] ; then
+ rsh $host "ls -l /etc/tar-backup/$fsname.level-0; \
+ cp /etc/tar-backup/$fsname.level-0 /etc/tar-backup/temp.level-1" \
+ 2>&1 | tee -a $LOGFILE
+ else
+ ls -l /etc/tar-backup/$fsname.level-0 2>&1 | tee -a $LOGFILE
+ cp /etc/tar-backup/$fsname.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
+ fi
+
+ # Actually back things up.
+
+ if [ $HOST != $host ] ; then
+ rsh $host $TAR_PART1 -f $HOST:$TAPE_FILE $TAR_PART2 $TAR_PART3 2>&1 | tee -a $LOGFILE
+ else
+# Using `sh -c exec' causes nested quoting and shell substitution
+# to be handled here in the same way rsh handles it.
+ sh -c "exec $TAR_PART1 -f $TAPE_FILE $TAR_PART2 $TAR_PART3" 2>&1 | tee -a $LOGFILE
+ fi
+ if [ $? -ne 0 ] ; then
+ echo Backup of $1 failed. | tee -a $LOGFILE
+ # I'm assuming that the tar will have written an empty
+ # file to the tape, otherwise I should do a cat here.
+ else
+ if [ $HOST != $host ] ; then
+ rsh $host mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/$fsname.level-1 2>&1 | tee -a $LOGFILE
+ else
+ mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/$fsname.level-1 2>&1 | tee -a $LOGFILE
+ fi
+ fi
+ $TAPE_STATUS | tee -a $LOGFILE
+ sleep 60
+ shift
+done
+
+# Dump any individual files requested.
+
+if [ x != "x$BACKUP_FILES" ] ; then
+ date=`date`
+ TAR_PART2="--listed=/etc/tar-backup/temp.level-1"
+ TAR_PART3="--label='Incremental backup of miscellaneous files at $date'"
+
+ echo Backing up miscellaneous files at $date | tee -a $LOGFILE
+ echo Last full dump of these files: | tee -a $LOGFILE
+ ls -l /etc/tar-backup/misc.level-0 2>&1 | tee -a $LOGFILE
+
+ rm -f /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
+ cp /etc/tar-backup/misc.level-0 /etc/tar-backup/temp.level-1 2>&1 | tee -a $LOGFILE
+
+ echo Backing up miscellaneous files at $date | tee -a $LOGFILE
+# Using `sh -c exec' causes nested quoting and shell substitution
+# to be handled here in the same way rsh handles it.
+ sh -c "exec $TAR_PART1 -f $TAPE_FILE $TAR_PART2 $TAR_PART3 \
+ $BACKUP_FILES" 2>&1 | tee -a $LOGFILE
+ if [ $? -ne 0 ] ; then
+ echo Backup of miscellaneous files failed. | tee -a $LOGFILE
+ # I'm assuming that the tar will have written an empty
+ # file to the tape, otherwise I should do a cat here.
+ else
+ mv -f /etc/tar-backup/temp.level-1 /etc/tar-backup/misc.level-1 2>&1 | tee -a $LOGFILE
+ fi
+ $TAPE_STATUS | tee -a $LOGFILE
+else
+ echo No miscellaneous files specified | tee -a $LOGFILE
+ false
+fi
+
+mt -f $TAPE_FILE rewind
+mt -f $TAPE_FILE offl
+
+echo Sending the dump log to $ADMINISTRATOR
+cat $LOGFILE | sed -f logfile.sed > $LOGFILE.tmp
+/usr/ucb/mail -s "Results of backup on `date`" $ADMINISTRATOR < $LOGFILE.tmp