dotlockfile

[Jay Nugent]

Greetings,

On Tue, 24 Jul 2007, Michael Hipp wrote:

> Does anyone have a bash script that does essentially the same thing as 
> the 'dotlockfile' utility?
> 
> I have a system without dotlockfile but I need that functionality to 
> keep a script from clobbering itself.

   I just ran into this problem earlier today.  So I'll be implementing 
this lockfile code into my scripts tonight.


#
#==================================================================
# Test to see if we have a LOCK file (i.e. a copy is still running)
#
LCKFYLE="/home/wwnet/LCK-wwnet-dialusage"
#
if [ -f $LCKFYLE ]; then
        /bin/mail -s "$LCKFYLE exists" jjn at nuge.com
        exit 0
else
        touch $LCKFYLE
#
#==================================================================
# We wrap the rest of the code from here on...
#

   [ place the rest of your script in here ]

#
#==================================================================
#
# ... the end of the LCKFYLE test wrapper
#
rm $LCKFYLE
#
fi
#
#----------
#
# - end -
#



   Hope that helps.

      --- Jay Nugent
             
"Getting rid of terrorism is like getting rid of dandruff.  It cannot
 be done completely no matter how hard you try." -- Gore Vidal
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