grep command in a script takes more time than pcregrep to complete.

Solution Unverified - Updated -

Issue

  • When grep is used to parse file with lines more than 1k characters long it takes almost 18 minutes to finish, while with pcregrep script finishes fairly quickly.

Environment

  • Red Hat Enterprise Linux (RHEL) 5, 6
  • grep-2.5.1-55.el5
  • pcre-6.6-6.el5_6.1.

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