CODEWITHSUNDEEP
linuxbashawksedsolaris
maihabunash
maihabunash

Reputation: 1702

How to match the first three lines in the file that contain some word

How to match the first three lines in the file that contain the word racoon ( from the top to down )

For example

127.0.0.1 localhost
18.2.3.122  racoon133
192.9.200.10 exemachine2
18.2.3.123  Aracoon101
10.10.10.10 jank_machine
18.2.3.124  racoon102
18.2.3.125 start10
18.2.3.125 frt100
18.2.3.128  racoon103

The expected results should be

18.2.3.122  racoon133
18.2.3.123  Aracoon101
18.2.3.124  racoon102

Upvotes: 0

Views: 42

Answers (2)

user4453924
user4453924

Reputation:

another awk way

awk 'x<x+=/racoon/;x==3{exit}' file

or

awk '/racoon/&&++x;x==3{exit}' file

Upvotes: 2

Wintermute
Wintermute

Reputation: 44063

With awk:

awk '/racoon/ { print; if(++ctr == 3) exit }' filename

Alternatively with sed:

sed -n '/racoon/ { x; /.../ q; s/$/./; x; p; }' filename

...but perhaps most sanely with grep:

grep -m 3 racoon filename

That last one might be a GNU extension; I'm not entirely certain Solaris's grep will accept -m 3. Of course, there's always

grep racoon filename | head -n 3

although that doesn't short-circuit (could be a performance problem with long files).

Upvotes: 2

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