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- #!/bin/sh
- #******************************************************************
- #ident mirror Time-stamp: <97/09/29 13:28:44 bav>
- #******************************************************************
- # Gerd Bavendiek bav@rw.sni.de 97-09-04
- #
- # Usage: mirror [-f|-verify|-floppy]
- #
- # This script tries to mirror the current working directory on the
- # node "mirror". It will copy all files via rdist(1). This way a true
- # mirror of the current directory and its subdirectories is created.
- #
- # A remark for those, wo are not familiar with rdist(1):
- # In subsequent calls to the script only files, that do not exist on
- # node "mirror", will be copied.
- #
- # Files on "mirror", which are younger than on the actual node, will
- # be mentioned but remain untouched (rdist option younger)
- #
- # Remarks:
- # You will need an entry "mirror" in your /etc/hosts.
- # The files "distfile" and "Distfile" have special meaning to
- # rdist. If such a file is found, mirror exits immediatly.
- # Emacs-Backup-Files (except-pattern *~$) will not be mirrored. Watch
- # quoting in the here-document.
- #
- # Options:
- #
- # -f will force removing of files on "mirror", which are
- # not on this side - this is somewhat dangerous.
- # -verify just watch what would be done.
- #
- # Finally:
- # I sometimes want to do a quick backup of a directory using a floppy with
- # an ext2-Filesystem. Here cp -urvp can be used. The disadvantage of
- # this is handling of insufficient space on the floppy. Furthermore
- # the rdist's -f option cannot be used with cp. That's why I say:
- #
- # -floppy Haven't finished this one. Ideas welcome. Use only, if
- # you are knowing, what you do ...
- #------------------------------------------------------------------
- if [ -r Distfile -o -r distfile ]; then
- echo "[dD]istfile found - no action !"
- exit 0
- fi
-
- if [ -r .distfile ]; then
- rdist -f .distfile # Gerd's special - just for personal use
- exit $?
- fi
-
- # Force ! Remove files on "mirror", which can not be found on this
- # side ! Remember: there is no "unremove" in Linux ;-)
- if [ "$1" = "-f" ]; then
- rdist -d PWD=`pwd` -f - << EOF
- ${PWD} -> mirror
- install -oyounger,remove ${PWD};
- except_pat ( ~\\$ );
- EOF
- # Do nothing, just watch what would be done.
- elif [ "$1" = "-verify" ]; then
- rdist -d PWD=`pwd` -f - << EOF
- ${PWD} -> mirror
- install -oyounger,verify ${PWD};
- except_pat ( ~\\$ );
-
- EOF
- elif [ "$1" = "-floppy" ]; then
- # Mount floppy. Don't give up, if it's already mounted. Rely on
- # RetCode 3 in this case ! You will need something like the following
- # in your /etc/fstab:
- # /dev/fd0 /floppy ext2 user 0 0
- mount /floppy || if [ $? -ne 3 ]; then echo "$0: mount /floppy failed !"; exit 1; fi
- # If the mount hasn't succeded, don't panic: cp will totally break.
- # The options: r recursive (subdir's yes), u update (copy only if
- # file on /floppy is older), v verbose (tell me what you are
- # doing), p preserve (preserve timestamps)
- # Copying . really isn't cool.
-
- if [ "$2" != "-nodescend" ]; then
- DIRSIZE=`du -s . | cut -f1`
- CP_OPTIONS="-ruvp ."
- else
- # Shudder ! Really ugly ! Just a personal hack ! Will not handle dot-files !
- DIRSIZE=`du --total -s \`find . -type f -print -maxdepth 1\` | grep total | cut -f1`
- CP_OPTIONS="-uvp *"
- fi
-
- FLOPPYSIZE=`df -k /floppy | awk 'NR==2 {print $2}'`
- if [ `expr $FLOPPYSIZE \<\= $DIRSIZE` -eq 1 ]; then
- echo "Insufficient space: Files will not fit on /floppy ($DIRSIZE kB needed, $FLOPPYSIZE kB avail)"
- echo "$0: exiting without copying anything !"
- else
- cp $CP_OPTIONS /floppy
- fi
- umount /floppy || echo "$0: umount /floppy failed !"; exit 1
- else
- rdist -d PWD=`pwd` -f - << EOF
- ${PWD} -> mirror
- install -oyounger ${PWD};
- except_pat ( ~\\$ );
- EOF
- fi
-