Extended regular expression grep (UNIX)
egrep [-cilnqsvx] [-e expression | -f expression_file]... [file...] egrep [-cilnqsvx] expression [file...]
See grep for a complete listing.
The egrep utility does an extended regular expression grep (equivalent to grep -E). See the documentation for grep for details.
- Lines were found matching the expression provided.
- An error occurred or no matching lines were found.