Hi Kushal,
Thanks for the assist.
On 24/05/2012 07:05 AM, Kushal Kumaran wrote:
If you use the N> FILENAME syntax, the shell will create the file and
make descriptor N refer to the named file. You don't have to create
the file yourself. Details of this kind of redirection are in the
bash manual, if you're interested.
Thank you. In the usual context I would have expected the > to create
the file. I just was not sure.
Just replace your backup command:
/script/backup arg1 arg2
with:
flock -xn /tmp/backup-lock /script/backup arg1 arg2
This query actually stemmed from my backup thread query (Automatic
Backup Script Help), where I have a udev rule kick off the backup script.
In order to prevent the suspension of udev operations I intend to use a
staging script, which originally read as follows...
/data/backups/scripts/start-disk-1.sh
#!/bin/bash
echo /data/backups/scripts/backup-disk-1.sh | at now + 1 minute
From your info, I guess I can now use...
/data/backups/scripts/start-disk-1.sh
#!/bin/bash
echo flock -xn /tmp/disk-1-lock /data/backups/scripts/backup-disk-1.sh |
at now + 1 minute
Kindest Regards
Craig A. Adams
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