Running a script with cron

altamaha · #1 (**permalink**) 06-04-2008

I have the following script (trapsize) that checks a file size on my syslog server, and if the file is gt 6g, it will mail an alert to the admin for inspection. The following works like a champ when I execute ./trapsize logged in as root user using bash shell.

Code:

FILESIZE=$(ls -l /opt2/fwsm/fwsm | tr -s " " "\t" | cut -f5)
MAILGROUP="userA@conus.army.mil, userB@conus.army.mil, userC@conus.army.mil"

if [ $FILESIZE -lt 6000000000 ]
then
    :  # no action required
else
    echo "$FILESIZE" | mailx -r userD@post.army.mil -s "File Size Limit of 6g Reached on fwsm" $MAILGROUP
fi

I need to have the script in /usr/lib with root:bin ownership and permissions set so that cron can run the script at various times during the day.

I have created the following in /usr/lib/trapsize for cron, but I can't get it to function. Any advice would be appreciated.

Code:

#! /bin/sh
#
# Script will periodically check the log size for the FWSM and notify admin if greater than 6g - jbrannen
#
#
#

FILE=fwsm
FILEPATH=/opt2/fwsm/
FILESIZE=$(ls -l $FILEPATH$FILE | tr -s " " "\t" | cut -f5)
MAILGROUP="userA@conus.army.mil, userB@conus.army.mil, userC@conus.army.mil"


if [ $FILESIZE -lt 6000000000 ]
then
    :  # no action required
else
    echo "$FILESIZE" | mailx -r userD@post.army.mil -s " File Size Limit of 6g reached on fwsm" $MAILGROUP
    rm $FILESIZE
fi

The error is as follows;
trapsize: syntax error at line 10: `FILESIZE=$' unexpected

in2nix4life · #2 (**permalink**) 06-04-2008

You have a space between FILESIZE=$ ( .

Try changing it to FILESIZE=$( .

Hope this helps.

era · #3 (**permalink**) 06-05-2008

Or your /bin/sh is too old to understand the $(ls ...) syntax. Maybe try with FILESIZE=`ls ...` instead.

altamaha · #4 (**permalink**) 06-05-2008

Thanks. The solution was to use the back tics instead of the $( as suggested. The extra space in the example was an illusion produced by the font I guess, because it was not in the actual code.

I do appreciate the help.
JB

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