The -h option is not working in xzgrep/zgrep

Solution Unverified - Updated -

Issue

  • The option -h does not work with xzgrep and zgrep
  • It shall suppress the filenames as it does with grep.
  • According to man page, the output of xzgrep with -h option shall be as without filename prefix.
  -h, --no-filename         suppress the file name prefix on output
      --label=LABEL         use LABEL as the standard input file name prefix
  • zgrep -h does not work in Red Hat Enterprise Linux 6
[root@host root]# zgrep -h foo f1 f2
f1:foo
f2:foo

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • xzgrep [Packaged via xz. Problem is seen with both RHEL 5 and RHEL 6]
  • zgrep [problem is only noticed with RHEL 6. Packaged via gzip 1.3.12-18.el6 ]

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