In-place processing with grep

Question

I\'ve got a script that calls grep to process a text file. Currently I am doing something like this.

$ grep \'SomeRegEx\' myfile.txt > myfile.txt.temp
$ m         


        

Answer 1

cat myfile.txt | grep 'sometext' > myfile.txt

This will find sometext in myfile.txt and save it back to myfile.txt, this will accomplish what you want. Not sure about regex, but it does work for text.