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Given a bash script running ping -c 25 google.com | tee /home/user/myLogFile.log

And the output file /home/user/myLogFile.log containing:

PING google.com (117.102.117.238) 56(84) bytes of data. 
64 bytes from 117.102.117.238: icmp_seq=1 ttl=61 time=12.7 ms
64 bytes from 117.102.117.238: icmp_seq=2 ttl=61 time=61.1 ms
(...)
64 bytes from 117.102.117.238: icmp_seq=25 ttl=61 time=7.11 ms

--- google.com ping statistics ---
25 packets transmitted, 25 received, 0% packet loss, time 24038ms
rtt min/avg/max/mdev = 5.573/11.293/61.102/11.210 ms

How to limit the maximum lines in the log file, and if that maximum is reached, the file is reset and keep the next output saved?

Julien Carsique
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Muhammad Jendro Yuwono
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  • thank you S.Spieker, I already use that link before. But, its not working like I wanted. the script like `my_program | dd bs=1 count=100 > log` just make the file until 100 Bytes and not resume the 'my_program' regards – Muhammad Jendro Yuwono Jan 05 '16 at 10:45
  • Actually, there is `my_program | tee >(split -d -b 100000 -)` as accepted answer in the above suggested duplicate – Julien Carsique Jan 06 '16 at 01:34

1 Answers1

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Ok, I think you can do something like:

ping -c 25 google.com | tee >(split -d -b 100000 - /home/user/myLogFile.log)
Julien Carsique
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S.Spieker
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