Setting crontab to ping gateway every minute

moses0404 · 02-25-2013, 04:59 AM

im new in Linux and i need help about crontab

i want to plan pinging my gateway every 1 minute but i also want to display a message containing time and redirect the whole result to a file

here is what i typed:
* * * * * ping -c2 192.168.66.1;echo " Done at $(date) " >> ~/pin

but this one gives me only the time and date without ping details

thnx in advance

Kamael · 02-25-2013, 05:17 AM

Hi,

Try this:

* * * * * ping -c2 google.co.in >> pingoogle;echo "Done at $(/bin/date)" >> pingoogle

Regards

shivaa · 02-25-2013, 05:22 AM

Which OS? Crontab entries may vary depending upon the operating system.
For a linux based system, make entry like:

Code:

*/1 * * * * ping -c2 192.168.66.1; echo "Done at $(date)" >> /path/to/output

Let's know if you're facing any pb or stuck at some point.

colucix · 02-25-2013, 05:30 AM

Please use a descriptive title for your thread excluding words like 'urgent' or 'help'. Using a proper title makes it easier for members to help you. This thread has been reported for title modification. Please do not add replies that address the thread title.

unSpawn · 02-25-2013, 06:21 AM

Code:

*/1 * * * * /bin/ping -qn -W4 -c2 192.168.66.1 2>&1|xargs -iX /bin/date +"%Y-%m-%d %H:%M:%S X" >> "${HOME}/ping.log" 2>&1

moses0404 · 02-25-2013, 06:38 AM

Thnx Kamael it is working perfectly

moses0404 · 02-25-2013, 06:40 AM

thnx shivaa am using rhel 6, sorry but ur command gave the exact result as mine

shivaa · 02-25-2013, 07:25 AM

Quote:

Originally Posted by moses0404

thnx shivaa am using rhel 6, sorry but ur command gave the exact result as mine

I didn't actually modify your command, but crontab entry only. But you can customize command according to your convenience.

Also you can:

Code:

*/1 * * * * ping -c2 www.dummy.com >> /path/to/output && echo "Done at $(date)" >> /path/to/output

moses0404 · 02-25-2013, 07:56 AM

Quote:

Originally Posted by shivaa

I didn't actually modify your command, but crontab entry only. But you can customize command according to your convenience.

Also you can:

Code:

*/1 * * * * ping -c2 www.dummy.com >> /path/to/output && echo "Done at $(date)" >> /path/to/output

is it possible to combine these 2 commands with tee i mean: ping>>file|tee file|echo>>file

shivaa · 02-25-2013, 09:05 AM

Yes, tee reads from standard input and writes to standard output and files (as per manual, see here)

But command you've mentioned is not correct. It's a useless use of tee cmd. You can use tee cmd to write/append output of some operation in one or more files simultaneously, like:

Code:

~$ ping www.dummy.com | tee -a file1 file2

In your case, it's not writing output to two or more files, but writing output of two commands to a single file. So tee isn't useful here.

Also once check:

Code:

~$ man tee
~$ info tee

moses0404 · 02-25-2013, 09:29 AM

Quote:

Originally Posted by shivaa

Yes, tee reads from standard input and writes to standard output and files (as per manual, see here)

But command you've mentioned is not correct. It's a useless use of tee cmd. You can use tee cmd to write/append output of some operation in one or more files simultaneously, like:

Code:

~$ ping www.dummy.com | tee -a file1 file2

In your case, it's not writing output to two or more files, but writing output of two commands to a single file. So tee isn't useful here.

Also once check:

Code:

~$ man tee
~$ info tee

Je vs remercie pour ttes ces infos