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authorhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 01:45:08 -0500
committerhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 01:45:08 -0500
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JIRA: BOTTLENECK-10 Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
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+NAME
+ pgrep - a grep with Perl-compatible regular expressions.
+
+
+
+SYNOPSIS
+ pgrep [-Vchilnsvx] pattern [file] ...
+
+
+
+DESCRIPTION
+ pgrep searches files for character patterns, in the same way
+ as other grep commands do, but it uses the PCRE regular
+ expression library to support patterns that are compatible
+ with the regular expressions of Perl 5. See pcre(3) for a
+ full description of syntax and semantics.
+
+ If no files are specified, pgrep reads the standard input.
+ By default, each line that matches the pattern is copied to
+ the standard output, and if there is more than one file, the
+ file name is printed before each line of output. However,
+ there are options that can change how pgrep behaves.
+
+ Lines are limited to BUFSIZ characters. BUFSIZ is defined in
+ <stdio.h>. The newline character is removed from the end of
+ each line before it is matched against the pattern.
+
+
+
+OPTIONS
+ -V Write the version number of the PCRE library being
+ used to the standard error stream.
+
+ -c Do not print individual lines; instead just print
+ a count of the number of lines that would other-
+ wise have been printed. If several files are
+ given, a count is printed for each of them.
+
+ -h Suppress printing of filenames when searching mul-
+ tiple files.
+
+ -i Ignore upper/lower case distinctions during com-
+ parisons.
+
+ -l Instead of printing lines from the files, just
+ print the names of the files containing lines that
+ would have been printed. Each file name is printed
+ once, on a separate line.
+
+ -n Precede each line by its line number in the file.
+
+ -s Work silently, that is, display nothing except
+ error messages. The exit status indicates whether
+ any matches were found.
+
+ -v Invert the sense of the match, so that lines which
+ do not match the pattern are now the ones that are
+ found.
+
+ -x Force the pattern to be anchored (it must start
+ matching at the beginning of the line) and in
+ addition, require it to match the entire line.
+ This is equivalent to having ^ and $ characters at
+ the start and end of each alternative branch in
+ the regular expression.
+
+
+
+SEE ALSO
+ pcre(3), Perl 5 documentation
+
+
+
+
+
+DIAGNOSTICS
+ Exit status is 0 if any matches were found, 1 if no matches
+ were found, and 2 for syntax errors or inacessible files
+ (even if matches were found).
+
+
+
+AUTHOR
+ Philip Hazel <ph10@cam.ac.uk>
+ Copyright (c) 1997-1999 University of Cambridge.
+