I've been happily using grep for many years without any issues, but since today it quit working. During the past hour I tried this and that, but enough is enough, I'm posting the bastard here: On the simplest command like grep 'aaa' file.txt I'm getting this: grep: aaa: No such file or directory So grep does not interpret the first argument as the pattern as it should, but treats it as a path. Please help me, I'm going crazy '-(