On Sat, May 18, 2013 at 1:15 PM, James Pifer <jep at obrien-pifer.com> wrote: > Sorry for the off topic, but don't a better resource. I'm not great at > scripting, but need a quick script to modify a file. > > I have a long file that has lines like this: > > some text > some text2 > CN=DATA.OU=XYZ.O=CO > some text3 > some text4 > > And this repeats, but XYZ changes. "DATA" is always called data. (it's > being renamed basically) > > I need to change the middle line but leave the rest of the file as is > like this: > > some text > some text2 > CN=XYZ_DATA.OU=XYZ.O=CO > some text3 > some text4 > > Anyone know a quick way to do this? Any help is appreciated. cat file | sed -e's/CN=DATA.OU=\(.*\)\.O=CO/CN=\1_DATA.OU=\1.O=CO/'