Deleting all lines except last 500


 
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# 15  
Old 05-05-2013
Code:
$ tac file | awk 'NR<=500' | tac

This User Gave Thanks to RudiC For This Post:
# 16  
Old 05-06-2013
Code:
printf '%s\n' 1,-500d w q | ed -s file 2>/dev/null

Regards,
alister
This User Gave Thanks to alister For This Post:
# 17  
Old 05-06-2013
Thanks all..

I see many responses!! .. Smilie

I will try them one by one will respond by the end of the day..

Thank you all again...
# 18  
Old 05-07-2013
tac not found in my box

Code:
man tac
No manual entry for tac.

Below one worked perfectly & really smart way indeed Smilie :

Code:
printf '%s\n' 1,-500d w q | ed -s file 2>/dev/null

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