cron job question (for checking kernel updates)

[Bjørge Solli]

Is the script executable?

-b

On 10/02/2013 05:10 PM, Ranjan Maitra wrote:
> Hi,
>
> I have a cron job running which yum updates all my machines once a day.
> All of these work fine.
>
> I also have a cron job which checks for kernel updates every hour and
> sends me a message if an updated kernel has been installed. Here is the
> relevant script:
>
> --- begin file called check-kernel.sh in my scripts/yum directory---
>
> #!/bin/bash
>
> latestkernel=$(rpm -q kernel |tail -n1|sed -e 's/kernel-//')
>
> #echo "$latestkernel"
>
> if uname -a | grep -qv "$latestkernel"; then
> notify-send "Kernel UPDATE on ${HOSTNAME}: Running Kernel is $(uname
> -r) but lat est installed rpm is ${latestkernel}; REBOOT required"
> fi;
>
>
> --- end file called check-kernel.sh ---
>
> (A bit wordy, I know.)
>
> I have verified that this is executable and works from the commandline
> without any errors.
>
> I have the following set up via crontab -e:
>
> 0,15,30,45 * * * * nice -n 19 $HOME/.xplanet/download_xplanet_cloudmap
> 5 * * * * nice -n 19 $HOME/scripts/yum/check-kernel.sh
>
> The first line downloads cloudmaps for use with xplanet and works just
> fine (or appears to) and has done so for aeons.
>
> However, nothing happens (or appears to) for the second line.
>
> What is wrong here?
>
> Many thanks and best wishes,
> Ranjan
>
>