Adding a cron job that will execute everyday at 14:50 hrs

Shell Programming and Scripting
1

Hi
I want to execute a cron job everyday at 14:50 hrs. I have a script like this:

 TMP_FILE="/tmp/tmpcron.txt"
 RES=0
 /usr/bin/crontab -l >> $TMP_FILE
 ADD_JOB="50 14 * * * /opt/mypath/scriptname.sh"
 grep "scriptname.sh" $TMP_FILE >> /dev/null
 JOB_NOT_EXIST=$?
 if test $JOB_NOT_EXIST == 1
 then
        echo "$ADD_JOB" >> $TMP_FILE
        /usr/bin/crontab $TMP_FILE >> /dev/null
        RES=$?
 fi

 rm $TMP_FILE
 exit $RES

However it is not getting executed at 14:50 Hrs. Can anyone tell me what I am missing?

2

why do you add same lines after every execute your script

/usr/bin/crontab -l >> $TMP_FILE

change to this

/usr/bin/crontab -l > $TMP_FILE

and firstly check yur cron job list before execute ttyoru script and then execute your script,
after check your cron list for is there a line for "scriptname.sh"

3

What Operating System and version do you have? What Shell are you using?

Try removing the redirect to /dev/null from the crontab command to see if there is any message.
Also try running crontab -l to see if the new entry made it into the crontab.
If the entry is in the crontab, then look for errors in unix mail for the owner of the crontab and in the cron log.