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