Issue
I have recently wrote a script that will parse a whole bunch of files and increment the version number throughout. The script works fine for all files except one. It uses the following sed command (which was pieced together from various google searches and very limited sed knowledge) to find a line in a .tex file and increment the version number.
sed -i -r 's/(.*)(VERSION\}\{0.)([0-9]+)(.*)/echo "\1\2$((\3+1))\4"/ge' fileName.tex
The issue with the above (which I am unsure how to fix) is that the line it finds to change appears as
\newcommand{\VERSION}{0.123},
and the sed command replaces the "\n" in the line above with the newline character, and thus outputting
ewcommand{\VERSION}{0.124} (with a newline before it).
The desired output would be:
\newcommand{\VERSION}{0.124}
How can I fix this?
Solution
Alright so I was not able to get the answer from Cyrus to work because the file was finding about 50 other lines in my tex files it wanted to modify and I wasn't quite sure how to fix the awk statement to find just the specific line I wanted. However, I got it working with the original sed method by making a simple change.
My sed command becames two, where the first creates a temporary string %TMPSTR%, immediately followed by replacing said temp string to get the desired output and avoid any newline characters appearing.
sed -i -r 's/(.*)(VERSION\}\{0.)([0-9]+)(.*)/echo "\\%TMPSTR%{\\\2$((\3+1))\4"/ge' fileName.tex
sed -i -r 's/%TMPSTR%/newcommand/g' fileName.tex
So the line in the file goes from
\newcommand{\VERSION}{0.123} --> \%TMPSTR%{\VERSION}{0.124} --> \newcommand{\VERSION}{0.124}
and ends at the desired outcome. A bit ugly I suppose but it does what I need!
Answered By - d0sag3