Sed: replace alternate newlines

[cantab]

I have managed to make grep output some numeric data, as so:

280.000
5.549325
290.000
5.607368
300.000
5.664339

To import this into a spreadsheet, I need to convert alternate newlines into some other character (space, tab, or comma are fine), to get something like:

280.000,5.549325
290.000,5.607368
300.000,5.664339

How would I use sed (or any other standard Linux tool, but sed seems like what to use) to do this?

[Rog131]

Re: Sed: replace alternate newlines

Links:

rmnl — remove new line characters with tr, awk, perl, sed or C/C++
very-long -URL

HANDY ONE-LINERS FOR AWK
http://www.ee.ucl.ac.uk/~hamed/misc/awk1line.txt

The GNU Awk User's Guide
http://www.gnu.org/software/gawk/manual/gawk.html


=> HANDY ONE-LINERS FOR AWK tells:

 # concatenate every 5 lines of input, using a comma separator
 # between fields
 awk 'ORS=%NR%5?",":"\n"' file

If output.txt is

280.000
5.549325
290.000
5.607368
300.000
5.664339

then

awk 'ORS=NR%2?",":"\n"' output.txt

will print:

280.000,5.549325
290.000,5.607368
300.000,5.664339