[SOLVED] script to know whether croned or manuall executed

Fracker · 05-20-2011, 07:30 AM

Hi guyz,

How to find whether the script executed manually or executed from cron job?

I tried $SHELL but this don't work

druuna · 05-20-2011, 07:40 AM

Hi,

Jobs that are started by cron should be mentioned in the cron log file(s).

Have a look in /var/log or /var/log/cron.

Hope this helps.

Fracker · 05-20-2011, 08:19 AM

You mean like this ?

Code:

#!/bin/bash

last_cron_time=$( cat /var/log/cron | grep "sh /root/c.sh" | cut -c 8- | tail -n 1 | cut -c -5)

HH=$(date +"%H")
MM=$(date +"%M")
HH1=${last_cron_time:0:2}
MM1=${last_cron_time:3:2}

if [ $HH -eq $HH1 -a $MM -eq $MM1 ]; then
   echo "I am croned"
else
   echo "I am manual"
fi

Looks quite complex to me .... But it's working

druuna · 05-20-2011, 08:45 AM

Hi,

This part can be shortened:

Code:

last_cron_time=$( cat /var/log/cron | grep "sh /root/c.sh" | cut -c 8- | tail -n 1 | cut -c -5)

I'm not sure if the output of your cron log is the same as mine, but this works on my side:

Code:

last_cron_time=$( awk '/sh \/root\/c.sh/ { print $3 }' /var/log/cron | tail -n 1)

(forward slashes do need to be escaped).

Hope this helps.

catkin · 05-20-2011, 09:36 AM

Quote:

Originally Posted by Fracker

Hi guyz,

How to find whether the script executed manually or executed from cron job?

If "executed manually" means run from a terminal, the "standard" test is to check $PS1 but this test is more reliable:

Code:

case "$( /bin/ps -p $$ -o tty 2>&1 )" in
    *TT*-* | *TT*\?* ) 
        <script is not running from a terminal; could be by cron>
        ;;  
    *TT* )
        <script is running from a terminal>
esac

Fracker · 05-20-2011, 11:29 AM

wow cool thanks $PS1 wasn't working for me, this works like a charm just have tested

Code:

case "$( /bin/ps -p $$ -o tty 2>&1 )" in
    *TT*-* | *TT*\?* ) 
        <script is not running from a terminal; could be by cron>
        ;;  
    *TT* )
        <script is running from a terminal>
esac