Why pcregrep version 7.8 doesn't support regular expression match groups?

Solution In Progress - Updated -

Issue

  • The pcre package that ships with RHEL6 is old.
  $ pcregrep --version
  pcregrep version 7.8 2008-09-05

  • It doesn't support regular expression match groups. Which newer version of the package will support for match groups?

  • The current version on RHEL6 does not have the "-onumber" option.

  • Requirement is to be able to print match groups to pipe it into another command.

Environment

  • Red Hat Enterprise Linux 6

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