googrep.1

类似于google命令行的字符串搜索

.TH googrep 1 "14 February 2007"
.SH NAME
googrep - search text using a Google-style pattern
.SH SYNOPSIS
.B googrep
.RB [ -cHhILlnqsv ]
.I pattern
.RI [ file
.IR ... ]
.SH DESCRIPTION
.PP
.I Googrep
is a Unix-style grep program that uses Google-style search syntax.
.PP
The essence of Google-style search is:
.TP
-
A search pattern has one or more search terms.
.TP
-
A search term is either a word or a quoted phrase.
.TP
-
Search terms are automatically ANDed together.
.TP
-
Words in the pattern match words in the text, not partial words.
.TP
-
Matching is case-insensitive.
.PP
Note that the entire search pattern is always a single Unix command-line
argument, which generally means you pass it to the program in a quoted string.
If your search terms include a multi-word string, then you will
be passing a quoted string inside a quoted string.
It is important to pay attention to the two different layers of quoting!
.SH OPTIONS
.TP
.B -c
Count.
Suppress normal output; instead show a count of matching lines
for each input file.  With the -v option (see below), count
non-matching lines.
.TP
.B -H
With filename.
Show the filename for each match, even if there's only one file.
.TP
.B -h
No filename.
Don't show the filename, even if there's more than one file.
.TP
.B -I
Don't ignore case.
Other Unix grep programs default to case-sensitive matching and
use a lower-case -i flag to indicate case-insensitive matching.
Since we're imitating Google, which is always case-insensitive,
we do the reverse: case-insensitive is the default, and this
flag makes it case-sensitive.
.TP
.B -L
Files without matches.
Suppress normal output; instead show the name of each input
file from which no output would normally have been shown.
.TP
.B -l
Files with matches.
Suppress normal output; instead show the name of each input
file from which output would normally have been shown.
.TP
.B -n
Line number.
Prefix each line of output with the line number within its input file.
.TP
.B -q
Quiet.
Suppress normal output.
The only result is the program's exit status.
.TP
.B -s
No messages.
Suppress error messages about nonexistent or unreadable files.
.TP
.B -v
Invert match.
Invert the sense of matching, to show non-matching lines.
.SH "EXIT STATUS"
Exit status is 0 if matches were found, 1 if no matches were found.
The -v flag inverts this.
Exit status is 2 if there were errors.
.SH "SEE ALSO"
grep(1), fgrep(1), egrep(1)
.SH AUTHOR
Copyright