Question

Inside crontab -e , i have added this entry

* * * * * /usr/bin/memcached_autostart.sh

And inside /usr/bin i have the script named memcached_autostart.sh

/usr/bin memcached_autostart.sh

#!/bin/bash
ps -eaf | grep 11211 | grep memcached
# if not found - equals to 1, start it
if [ $? -eq 1 ]
then
memcached -d -m 16 -p 11211 -u nobody
else
echo "eq 0 - memcache running - do nothing"
fi

When i tested this manually this way

Started the Memcache

memcached -d -m 16 -p 11211 -u nobody
ps -eaf | grep 11211 | grep memcached
nobody     611     1  0 13:28 ?        00:00:00 memcached -d -m 16 -p 11211 -u nobody

Then killed the process

kill -9 611

I was expecting that the crontab automatically starts the Memcache if its down , but it is not starting the Memcache , please tell me if i am doing anything wrong .

Answer 1

See if your crontab is working

After test it, The shell exit can be greater than 1, so try to change for this:

if [ $? -ge 1 ]