extutils::command.3

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

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.\" ========================================================================
.\"
.IX Title "ExtUtils::Command 3"
.TH ExtUtils::Command 3 "2007-12-18" "perl v5.10.0" "Perl Programmers Reference Guide"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
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.SH "NAME"
ExtUtils::Command \- utilities to replace common UNIX commands in Makefiles etc.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 12
\&  perl \-MExtUtils::Command \-e cat files... > destination
\&  perl \-MExtUtils::Command \-e mv source... destination
\&  perl \-MExtUtils::Command \-e cp source... destination
\&  perl \-MExtUtils::Command \-e touch files...
\&  perl \-MExtUtils::Command \-e rm_f files...
\&  perl \-MExtUtils::Command \-e rm_rf directories...
\&  perl \-MExtUtils::Command \-e mkpath directories...
\&  perl \-MExtUtils::Command \-e eqtime source destination
\&  perl \-MExtUtils::Command \-e test_f file
\&  perl \-MExtUtils::Command \-e test_d directory
\&  perl \-MExtUtils::Command \-e chmod mode files...
\&  ...
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The module is used to replace common \s-1UNIX\s0 commands.  In all cases the
functions work from \f(CW@ARGV\fR rather than taking arguments.  This makes
them easier to deal with in Makefiles.  Call them like this:
.PP
.Vb 1
\&  perl \-MExtUtils::Command \-e some_command some files to work on
.Ve
.PP
and \fI\s-1NOT\s0\fR like this:
.PP
.Vb 1
\&  perl \-MExtUtils::Command \-e \*(Aqsome_command qw(some files to work on)\*(Aq
.Ve
.PP
For that use Shell::Command.
.PP
Filenames with * and ? will be glob expanded.
.Sh "\s-1FUNCTIONS\s0"
.IX Subsection "FUNCTIONS"
.IP "cat" 4
.IX Item "cat"
.Vb 1
\&    cat file ...
.Ve
.Sp
Concatenates all files mentioned on command line to \s-1STDOUT\s0.
.IP "eqtime" 4
.IX Item "eqtime"
.Vb 1
\&    eqtime source destination
.Ve
.Sp
Sets modified time of destination to that of source.
.IP "rm_rf" 4
.IX Item "rm_rf"
.Vb 1
\&    rm_rf files or directories ...
.Ve
.Sp
Removes files and directories \- recursively (even if readonly)
.IP "rm_f" 4
.IX Item "rm_f"
.Vb 1
\&    rm_f file ...
.Ve
.Sp
Removes files (even if readonly)
.IP "touch" 4
.IX Item "touch"
.Vb 1
\&    touch file ...
.Ve
.Sp
Makes files exist, with current timestamp
.IP "mv" 4
.IX Item "mv"
.Vb 2
\&    mv source_file destination_file
\&    mv source_file source_file destination_dir
.Ve
.Sp
Moves source to destination.  Multiple sources are allowed if
destination is an existing directory.
.Sp
Returns true if all moves succeeded, false otherwise.
.IP "cp" 4
.IX Item "cp"
.Vb 2
\&    cp source_file destination_file
\&    cp source_file source_file destination_dir
.Ve
.Sp
Copies sources to the destination.  Multiple sources are allowed if
destination is an existing directory.
.Sp
Returns true if all copies succeeded, false otherwise.
.IP "chmod" 4
.IX Item "chmod"
.Vb 1
\&    chmod mode files ...
.Ve
.Sp
Sets \s-1UNIX\s0 like permissions 'mode' on all the files.  e.g. 0666
.IP "mkpath" 4
.IX Item "mkpath"
.Vb 1
\&    mkpath directory ...
.Ve
.Sp
Creates directories, including any parent directories.
.IP "test_f" 4
.IX Item "test_f"
.Vb 1
\&    test_f file
.Ve
.Sp
Tests if a file exists.  \fIExits\fR with 0 if it does, 1 if it does not (ie.
shell's idea of true and false).
.IP "test_d" 4
.IX Item "test_d"
.Vb 1
\&    test_d directory
.Ve
.Sp
Tests if a directory exists.  \fIExits\fR with 0 if it does, 1 if it does
not (ie. shell's idea of true and false).
.IP "dos2unix" 4
.IX Item "dos2unix"
.Vb 1
\&    dos2unix files or dirs ...
.Ve
.Sp
Converts \s-1DOS\s0 and \s-1OS/2\s0 linefeeds to Unix style recursively.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Shell::Command which is these same functions but take arguments normally.
.SH "AUTHOR"
.IX Header "AUTHOR"
Nick Ing-Simmons \f(CW\*(C`ni\[e-mail]\*(C'\fR
.PP
Maintained by Michael G Schwern \f(CW\*(C`[e-mail]\*(C'\fR within the
ExtUtils-MakeMaker package and, as a separate \s-1CPAN\s0 package, by
Randy Kobes \f(CW\*(C`[e-mail]\*(C'\fR.