I have a script that outputs text to
stdout. I want to see all this output in my terminal, and at the same time I want to filter some lines and save them in a file. Example:
$ myscript | grep -P 'A|C' > out.file
$ cat out.file
I want to see output of first command in terminal, and save the output of the second command in a file. At the same time. I tried using
tee, but with no result, or better, with reversed result.