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print from - to line of a file

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# 8  
Old 02-21-2012
Thanks Methyl & Scrutinizer!!

Big time diff have found with both the cmd's ..
Code:
[root@shirish-nagios ~]# du -sh msg
1.9G    msg
[root@shirish-nagios ~]#
[root@shirish-nagios ~]# time sed -n '777751,777753p;777753q' msg
Feb 21 19:53:37 shirish-nagios nagios: HOST NOTIFICATION: nagiosadmin;SEDGE2;DOWN;notify-host-by-email;CRITICAL - Network Unreachable 
Feb 21 19:53:37 shirish-nagios nagios: HOST ALERT: VRB3N;DOWN;HARD;10;CRITICAL - Network Unreachable (VRB3N)
Feb 21 19:53:37 shirish-nagios nagios: HOST NOTIFICATION: linux-admin;VRB3N;DOWN;notify-host-by-email;CRITICAL - Network Unreachable 

real    0m0.290s
user    0m0.075s
sys     0m0.087s
[root@shirish-nagios ~]# time sed -n 777751,777753p msg
Feb 21 19:53:37 shirish-nagios nagios: HOST NOTIFICATION: nagiosadmin;SEDGE2;DOWN;notify-host-by-email;CRITICAL - Network Unreachable
Feb 21 19:53:37 shirish-nagios nagios: HOST ALERT: VRB3N;DOWN;HARD;10;CRITICAL - Network Unreachable (VRB3N)
Feb 21 19:53:37 shirish-nagios nagios: HOST NOTIFICATION: linux-admin;VRB3N;DOWN;notify-host-by-email;CRITICAL - Network Unreachable 

real    0m19.106s
user    0m0.986s
sys     0m5.781s

--Shirish Shukla
This User Gave Thanks to Shirishlnx For This Post:
Scrutinizer
# 9  
Old 02-21-2012
@Shirishlnx
For the future please post realistic example making the scale clear.

I would certainly not use the "head and tail" approach on a large log file.
This User Gave Thanks to methyl For This Post:
Shirishlnx
# 10  
Old 02-21-2012
Sure .. !! That's I mentioned in my first thread that file size may be big as 20 MB ...

Here to test the time behavior with above sed codes ... have created the file of 1.9GB ..

Thanks Methyl .. Definitely will take care this !!!

--Shirish Shukla
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