How to get nth line from a file usuing commands


 
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# 1  
Old 09-26-2008
How to get nth line from a file usuing commands

Hi to all,

I have a file with 1000 lines,Now i need to get 789th record.So please any one help me out from this.

Thanks in advance.

Sathish
# 2  
Old 09-26-2008
Code:
sed -n '789p' file

# 3  
Old 09-26-2008
using a combination of head/tail might be faster
Code:
head -789 file | tail -1

# 4  
Old 09-26-2008
Or:

Code:
sed '789!d;q' infile

A quick test:

Code:
$ time head -813000 alert_xxx.log | tail -1
Starting control autobackup

real    0m5.457s
user    0m1.110s
sys     0m6.710s
$ time sed '813000!d;q' alert_xxx.log
Starting control autobackup

real    0m0.721s
user    0m0.470s
sys     0m0.200s

 
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