egrep

Extended regular expression grep (UNIX)

Syntax:

egrep [-cilnqsvx]
      [-e expression | -f expression_file]...
      [file...]
egrep [-cilnqsvx] expression [file...]

QNX Neutrino, Microsoft Windows

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.