Copy/Move Entire Line To End Of The Line Above

Question

I have a file that looks like the following:

/path/to/a/very/long/path
       0 0 0 0 0 0

I need to move the line starting with a number (this can be any value not necessarily 0) to the end of the preceding line so that it looks like the following:

/path/to/a/very/long/path 0 0 0 0 0

Yes, multiple lines that all read and start with the long path followed by the next line with the numeric values. — djc72uk, May 23 '23 at 14:54

Romeo Ninov · Accepted Answer · 2023-05-23T15:20:39.320

Some awk program can do the work line this:

awk '{if(NR%2==0) {print var,$0} else {var=$0}}' input_file >output_file

It use awk internal variable NR which is the number of current line.

Here is example:

# cat qs
/path/to/a/very/long/path
       0 0 0 0 0 0
/path/to/a/very/long/path
       1 2 0 0 0 0


# awk '{if(NR%2==0) {print var,$0} else {var=$0}}' qs
/path/to/a/very/long/path        0 0 0 0 0 0
/path/to/a/very/long/path        1 2 0 0 0 0

Copy/Move Entire Line To End Of The Line Above

1 Answers1