Bob Proulx wrote: > > Russell <[EMAIL PROTECTED]> [2002-09-02 11:42:45 +1000]: > > Thanks for the tips. I'm getting better;) > > I've been making this backup script which > > is nearly complete: > > I am going to leave the full quoted script so that I can comment on > the parts I want to comment upon... > > You might consider using 'rsync' here. Especially since this is a > backup you will be doing the backup when probably nothing has changed.
I'd forgotten about rsync. Just installing it now. It seems to have all the things i was looking for, including copying directories without the contents, copying devices, excluding certain patterns etc. Another poster mentioned it a week or two ago. > But the 'cp' will always copy all of the files regardless. Putting an > rsync here instead will only copy what has changed. With cp -u, the files are only updated if they're newer. > Also, as a backup what happens when you remove a file from your > working directory? Will the copy _ever_ be removed from backup? This > depends upon what you want. If you were writing to a new CD each time > it would not be a question. But if you are keeping a backup on disk > somewhere then you probably want to delete it from disk eventually. > What I do is to have rsync rotate me older copies. I will include an > example at the bottom. I forgot about removing obsolete files. I just wanted to save everything before i crashed and burned;) > > # Copy everything on main partition > > # Strip some top level directories we don't want to copy > > FILES=$( ls / | sed -e s/boot//g | sed -e s/cdrom//g | sed -e s/proc//g | sed -e >s/floppy//g | sed -e s/mnt//g | sed -e s/dev//g) > > That sed is pretty clever. But extremely unwieldy. To do exactly > what you are doing easier I would use 'grep -v -e pat1 -e pat2'. Try > that and add it to your toolbox of shell scripting. I didn't realize you could have multiple edits in the one sed command. I'll remember that. > But even better is to avoid that entirely. I can think of two > different ways of doing that. Perhaps you will like the grep way > better but just for the sake of discussion I am going to post another > method. > > > OPTS="-auv" > > for i in $FILES > > do > > echo "Updating /$i" > > if ! chroot / cp $OPTS $i /mnt > > What does the chroot do for you here? I don't think you want this. It's because the ls outputs all the files and directories without a leading "/". The other way was to add the "/" separately. > > then > > echo "Failed to update /$i" > > exit 1 > > fi > > done > > > > echo "System backup successful" > > exit 0 > > How about this? I had to do some on the fly translations. I > undoubtedly made some errors which you will have to debug. Don't use > this with out approaching it as a task to debug. But this is my > normal method to backup my system. I usually go from one host to a > different backup host but the concept is the same. > > # This is the destination of the backup. > DESTDIR=/mnt/backup > > # For rotating incrementals use the three letter day name. > BACKUPDIR=incr-$(date '+%Y-%m-%d') > > OPTS="-a --delete --numeric-ids --backup --backup-dir=$DESTDIR/$BACKUPDIR" > for i in $FILES I assume there's an ls command somewhere that defines FILES. > do > case "$i" in... Thanks for the script. I'll do some fixing on mine;) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
