Grep Exclude: Patterns, Files, and Directories

-v Invert match, show lines that do not match
-e pattern Specify a pattern (use multiple times to exclude several)
–exclude=»GLOB» Skip files matching the glob pattern
–include=»GLOB» Search only files matching the glob pattern
–exclude-dir=DIR Skip directories matching the name
-r Recursive search (skips symlinks found while descending)
-R Recursive search (follows all symlinks)