On Monday 22 Nov 2010, Kshitiz wrote: > I use rsync to copy my incremental data to an external harddisk every > 5 minutes using cron. However, if the external harddisk, connected > to the USB port is disconnected, the root partition fills up. I need > your help to create a proper script that does the following: > > Before running the rsync copying script, I want to > a) Add some statement that would check if the external harddisk > is attached and mounted. b) If not, it should be mounted before the > copying script is run to copy only to this external disk. c) If it > is not mounted, mount should be attempted, and if it does not mount, > rsync copying command should not be executed. > > Is there any better way to do this? > > Under no circumstances, I want the rsync script to execute if the USB > connection is not active.
Assuming your USB device is /dev/hdb1 and it gets mounted on /media/hdb1, you can try the following: 1. Add an entry in /etc/fstab: /dev/hdb1 /media/hdb1 auto user 0 0 2. Make an rsync script of the form: if ! mount | fgrep /dev/hdb1 | fgrep /media/hdb1 > /dev/null then mount /dev/hdb1 fi if mount | fgrep /dev/hdb1 | fgrep /media/hdb1 > /dev/null then rsync... else echo "USB device not mounted, aborting" >&2 exit 1 fi This code is provided without any claim to working or warranty, and if it fails to run or causes your cat to be run over by a road roller or your wife to divorce you or bedbugs to infest your bedroom, I am not responsible. Regards, -- Raj -- Raj Mathur [email protected] http://kandalaya.org/ GPG: 78D4 FC67 367F 40E2 0DD5 0FEF C968 D0EF CC68 D17F PsyTrance & Chill: http://schizoid.in/ || It is the mind that moves -- http://mm.glug-bom.org/mailman/listinfo/linuxers
