put every alternate row in a column using some Unix commands

Question

I have a file with foll format:

key1
123
key2
345

I want to get it as:

key1 123
key2 345

I am trying a mix of seds , grep etc but not quite getting what I want. Any suggestions . I think deleteing "\n" on every odd row would also do the trick but can get that to work .

score 6 · Answer 1 · answered Dec 09 '11 at 13:14

6

This is a job for paste

paste -d " " - - < filename

answered Dec 09 '11 at 13:14

glenn jackman

238,783
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score 3 · Accepted Answer · answered Dec 09 '11 at 07:50

3

I think this might work for you:

echo -e "key1\n123\nkey2\n456" | sed 'N;s/\n/ /'

answered Dec 09 '11 at 07:50

potong

55,640
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The `N` command appends a newline, then the next line to the current line. The `s/\n/ /` replaces the newline (`\n`) with a space. – potong Dec 09 '11 at 08:13

put every alternate row in a column using some Unix commands

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