Hello,

I have a file filled with the below. Below are the first two lines:

male_0103.bmp male_0314.bmp scene_0356.bmp scene_0517.bmp scene_0418.bmp
male_0016.bmp scene_0396.bmp male_0064.bmp scene_0568.bmp left.bmp
etc.

I want to put a comma after each portion of text. For example:

male_0103.bmp, male_0314.bmp, scene_0356.bmp, scene_0517.bmp, scene_0418.bmp,
male_0016.bmp, scene_0396.bmp, male_0064.bmp, scene_0568.bmp, left.bmp,


Is there a Linux command that would allow me to do this to the entire file? Maybe a command that would place a comma after each 'p'? (the only 'p' in the entire file is in .bmp).


Thanks!

cat file | sed -e 's/p/p,/g'

where file is the filename. this is if bmp really is the only occurrence of p in the whole file.

Otherwise change it to 's/.bmp/.bmp,/g'

A slight clarification. The decimal point is a single character wild card.

sed 's/\.bmp/.bmp,/g' file >newfile

You might want to add a sed command to undo the very last substitution on the last line:
sed -e 's/\.bmp/.bmp,/g' -e '/$/s/\.bmp,$/.bmp/' file >newfile

A line is read in one at a time, and every sed command is applied to that line. Each additional rule operates on the changed line.