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awk or sed - Convert 2 lines to 1 line

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# 8  
Old 04-28-2012
Thanks to everyone for their help.

The perl solution is the only one I can get to work with my actual data. I think its more to do with the format of the data I have and not your code as I can get most of them working with the sample data I provided. I've spend hours trying to figure out what it is about the real data that the code doesn't like.

One thing that would be really helpfull if anyone has the time is brief breakdown of what the code is doing so i can learn a bit more about it. Especially the awk variable stuff like NR, FR, ORS etc. I spent a while googling and found loads of examples but not much explaining them. The one that really has me is in Jims code there is "NR%2". What is the "%" doing?


Again thanks for your help.
# 9  
Old 04-28-2012
Sure:
Code:
awk '
{
  ORS=(ORS==RS)?FS:RS    # If the output record separator is equal to RS ("\n") then set it to a FS ( " " ) else set it to RS ("\n"), thus alternating between newline and space.
  print $NF              # print the last field of the line. ORS determines if a space or a newline gets printed afterwards..
}' infile

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