How can I put a line in front of another with sed?

Question

How do you convert a file like this:

ghosts: [[8, 16]]
pacman: [3, 15]
ghosts: [[4, 26]]
pacman: [4,15]

to a file like this:

ghosts: [[8, 16]], pacman: [3, 15]
ghosts: [[4, 26]], pacman: [4,15]

with the sed command?

I tried sed -e 's/\npac/, pac/g' input_file and got no change as a result.

Possible duplicate of [How do I remove the line break from alternate lines in an ASCII file](https://stackoverflow.com/questions/45412782/how-do-i-remove-the-line-break-from-alternate-lines-in-an-ascii-file) — Mad Physicist, Oct 29 '18 at 19:59
Possible duplicate of [How to merge every two lines into one from the command line?](https://stackoverflow.com/questions/9605232/how-to-merge-every-two-lines-into-one-from-the-command-line) — ghoti, Oct 29 '18 at 20:36

score 0 · Answer 1 · answered Oct 29 '18 at 20:04

0

This might work for you (GNU sed):

 sed 'N;s/\n/, /' file

Append the next line to the current and replace the newline by a comma followed by a space.

answered Oct 29 '18 at 20:04

potong

This one worked perfectly, thank you for your answer – Jose Pinho Oct 30 '18 at 18:05

score 0 · Answer 2 · answered Oct 29 '18 at 20:14

0

another awk

$ awk '{ORS=NR%2?", ":RS}1' file

ghosts: [[8, 16]], pacman: [3, 15]
ghosts: [[4, 26]], pacman: [4,15]

or, with pr

$ pr -2ats', ' file

this should be the shortest way!

answered Oct 29 '18 at 20:14

karakfa

2 Answers2