CODEWITHSUNDEEP
regexbashsed
haael
haael

Reputation: 1057

Repeat each line using sed

I want to duplicate each line of the input using sed. I.e. when the input looks like:

first
secod
third
fourth
...

I want the output to look like:

first first
second second
third third
fourth fourth
... ...

and so on.

If this is impossible using sed, then what do you recommend? I prefer the most simple solution.

Upvotes: 2

Views: 2235

Answers (3)

anubhava
anubhava

Reputation: 785561

This appears to be tailor-made job for paste command:

paste -d " " file file

Upvotes: 4

Chris Seymour
Chris Seymour

Reputation: 85845

One way:

$ sed 's/.*/& &/' file
first first
second second
third third
fourth fourth

Upvotes: 6

iamauser
iamauser

Reputation: 11479

Use awk,

awk '{print $1, $1}' file

or as commented, you can do the following in case the words contain white spaces:

awk '{print $0, $0}' file

Upvotes: 2

Related Questions