- # C is instead of 'cd $filesystem'
- # - is 'this directory'
- # l is 'stay in local filesystem
- if `ssh $computer "$tar cfCl - $filesystem . $lastcmd \
- --exclude-from=$exf \
- | gzip" \
- | dd of=$DATE.tmp 2>/dev/null`
- then
- #perhaps it did work
- mv $DATE.tmp $DATE.tgz
+ # z gzip it
+ # c create archive
+ # C change to directory first
+ # - output to stdout (we pipe to gzip, then to dd)
+ # . where to start taring (see C)
+ # $lastcmd only files newer than this
+ # --exclude-from file to get exclusion pattern from
+ # pipe to gzip, which in turn pipes over the ssh-stream
+ # ..to dd, to output to a file. We surpress messages from dd.
+ # And at last, redirect stderr to stdout, to get output logged.
+ TARFILE=$DATE.tmp
+ TARCMD="ssh root@$computer \"$tar --one-file-system -zcf - -C $filesystem . $lastcmd \
+ --exclude-from=$exf\" > $TARFILE"
+ echo `date`" $computer: Running $TARCMD" >&2
+
+ if eval $TARCMD; then
+ mv $TARFILE $DATE.tgz