NAME

fmlgrep - search a file for a pattern

SYNOPSIS

fmlgrep [options] limited_regular_expression [file ...]

DESCRIPTION

fmlgrep searches file for a pattern and prints all lines that contain that pattern. The fmlgrep function uses limited regular expressions (expressions that have string values that use a subset of the possible alphanumeric and special characters) like those used with ed(1) to match the patterns. It uses a compact non-deterministic algorithm.

Be careful when using FMLI special characters (e.g., $, `, ', ") in limited_regular_expression. It is safest to enclose the entire limited_regular_expression in single quotes ' ... ' .

If file is not specified, fmlgrep assumes standard input. Normally, each line matched is copied to standard output. The file name is printed before each line matched if there is more than one input file.

Command line options are:

-b    Precede each line by the block number on which it  was
      found.   This  can be useful in locating block numbers
      by context (first block is 0).
-c    Print only a count of the lines that contain the  pat-
      tern.
-i    Ignore upper/lower case distinction  during  comparis-
      ons.
-l    Print only the names of  files  with  matching  lines,
      separated  by new-lines.  Does not repeat the names of
      files when the pattern is found more than once.
-n    Precede each line by  its  line  number  in  the  file
      (first line is 1).
-s    Suppress error messages about nonexistent  or  unread-
      able files.
-v    Print all lines except those that contain the pattern.

DIAGNOSTICS

fmlgrep returns the following exit values:

0  if the pattern is found (i.e., TRUE)
1  if the pattern is not found (i.e., FALSE)
2  if an invalid expression was used or file is inaccessible

NOTES

Lines are limited to BUFSIZ characters; longer lines are truncated. BUFSIZ is defined in /usr/include/stdio.h.

If there is a line with embedded nulls, fmlgrep will only match up to the first null; if it matches, it will print the entire line.

SEE ALSO

fmlcut(1F).
ed(1), egrep(1), fgrep(1), grep(1)  in  the  UNIX  System  V
Programmer's Reference Manual.