Page suivante Page précédente Table des matières Utilitaire mirror Gerd Bavendiek #!/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 Page suivante Page précédente Table des matières