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Functions

Print just line 4 from a textfile

Terminal - Print just line 4 from a textfile
sed -n '4{p;q}'
2010-07-10 00:26:22
User: kniht
Functions: sed
12
Print just line 4 from a textfile

Prints the 4th line and then quits. (Credit goes to flatcap in comments: http://www.commandlinefu.com/commands/view/6031/print-just-line-4-from-a-textfile#comment.)

Alternatives

There are 6 alternatives - vote for the best!

Terminal - Alternatives
sed -n '4p'
2010-07-08 22:07:40
User: infinull
Functions: sed
12

this method should be the fastest

awk 'NR==4'
head -n X | tail -n 1
2010-07-08 22:06:39
User: infinull
Functions: head tail
-1

using tail first won't do it because tail counts from the bottom of the file. You could do it this way but I don't suggest it

sed '4!d'
2011-09-05 17:54:57
User: totti
Functions: sed
-1

d --> delete

!d ---> delete others

perl -ne '$. == 4 && print && exit'
2011-09-05 21:52:16
User: bashrc
Functions: perl
-1

Perl version - just for completeness sake ;)

Know a better way?

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What others think

:-)

Comment by flatcap 197 weeks and 4 days ago

Sorry, but this is not portable. Probably works with Linux/GNU sed only.

For portability, you either have to use literal newline characters to separate the commands within a list, or simply repeat the command, like this:

sed '4p;4q'
Comment by inof 197 weeks and 2 days ago

Your point of view

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