App::Cpan(3pm)

1App::Cpan(3pm)         Perl Programmers Reference Guide         App::Cpan(3pm)
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NAME

6       App::Cpan - easily interact with CPAN from the command line
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SYNOPSIS

9               # with arguments and no switches, installs specified modules
10               cpan module_name [ module_name ... ]
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12               # with switches, installs modules with extra behavior
13               cpan [-cfFimt] module_name [ module_name ... ]
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15               # use local::lib
16               cpan -l module_name [ module_name ... ]
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18               # with just the dot, install from the distribution in the
19               # current directory
20               cpan .
21
22               # without arguments, starts CPAN.pm shell
23               cpan
24
25               # without arguments, but some switches
26               cpan [-ahruvACDLO]
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DESCRIPTION

29       This script provides a command interface (not a shell) to CPAN. At the
30       moment it uses CPAN.pm to do the work, but it is not a one-shot command
31       runner for CPAN.pm.
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33   Options
34       -a  Creates a CPAN.pm autobundle with CPAN::Shell->autobundle.
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36       -A module [ module ... ]
37           Shows the primary maintainers for the specified modules.
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39       -c module
40           Runs a `make clean` in the specified module's directories.
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42       -C module [ module ... ]
43           Show the Changes files for the specified modules
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45       -D module [ module ... ]
46           Show the module details. This prints one line for each out-of-date
47           module (meaning, modules locally installed but have newer versions
48           on CPAN).  Each line has three columns: module name, local version,
49           and CPAN version.
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51       -f  Force the specified action, when it normally would have failed. Use
52           this to install a module even if its tests fail. When you use this
53           option, -i is not optional for installing a module when you need to
54           force it:
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56                   % cpan -f -i Module::Foo
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58       -F  Turn off CPAN.pm's attempts to lock anything. You should be careful
59           with this since you might end up with multiple scripts trying to
60           muck in the same directory. This isn't so much of a concern if
61           you're loading a special config with "-j", and that config sets up
62           its own work directories.
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64       -g module [ module ... ]
65           Downloads to the current directory the latest distribution of the
66           module.
67
68       -G module [ module ... ]
69           UNIMPLEMENTED
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71           Download to the current directory the latest distribution of the
72           modules, unpack each distribution, and create a git repository for
73           each distribution.
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75           If you want this feature, check out Yanick Champoux's
76           "Git::CPAN::Patch" distribution.
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78       -h  Print a help message and exit. When you specify "-h", it ignores
79           all of the other options and arguments.
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81       -i  Install the specified modules.
82
83       -j Config.pm
84           Load the file that has the CPAN configuration data. This should
85           have the same format as the standard CPAN/Config.pm file, which
86           defines $CPAN::Config as an anonymous hash.
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88       -J  Dump the configuration in the same format that CPAN.pm uses. This
89           is useful for checking the configuration as well as using the dump
90           as a starting point for a new, custom configuration.
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92       -l  Use "local::lib".
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94       -L author [ author ... ]
95           List the modules by the specified authors.
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97       -m  Make the specified modules.
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99       -O  Show the out-of-date modules.
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101       -t  Run a `make test` on the specified modules.
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103       -r  Recompiles dynamically loaded modules with CPAN::Shell->recompile.
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105       -u  Upgrade all installed modules. Blindly doing this can really break
106           things, so keep a backup.
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108       -v  Print the script version and CPAN.pm version then exit.
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110   Examples
111               # print a help message
112               cpan -h
113
114               # print the version numbers
115               cpan -v
116
117               # create an autobundle
118               cpan -a
119
120               # recompile modules
121               cpan -r
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123               # upgrade all installed modules
124               cpan -u
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126               # install modules ( sole -i is optional )
127               cpan -i Netscape::Booksmarks Business::ISBN
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129               # force install modules ( must use -i )
130               cpan -fi CGI::Minimal URI
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132   Methods
133       run()
134           Just do it.
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136           The "run" method returns 0 on success and a postive number on
137           failure. See the section on EXIT CODES for details on the values.
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139           CPAN.pm sends all the good stuff either to STDOUT. I have to
140           intercept that output so I can find out what happened.
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EXIT VALUES

143       The script exits with zero if it thinks that everything worked, or a
144       positive number if it thinks that something failed. Note, however, that
145       in some cases it has to divine a failure by the output of things it
146       does not control. For now, the exit codes are vague:
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148               1       An unknown error
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150               2       The was an external problem
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152               4       There was an internal problem with the script
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154               8       A module failed to install
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TO DO

157       * There is initial support for Log4perl if it is available, but I
158       haven't gone through everything to make the NullLogger work out
159       correctly if Log4perl is not installed.
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161       * When I capture CPAN.pm output, I need to check for errors and report
162       them to the user.
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BUGS

165       * none noted
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SOURCE AVAILABILITY

172       This code is in Github:
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174               git://github.com/briandfoy/cpan_script.git
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CREDITS

177       Japheth Cleaver added the bits to allow a forced install (-f).
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179       Jim Brandt suggest and provided the initial implementation for the up-
180       to-date and Changes features.
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182       Adam Kennedy pointed out that exit() causes problems on Windows where
183       this script ends up with a .bat extension
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AUTHOR

186       brian d foy, "<bdfoy@cpan.org>"
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COPYRIGHT

189       Copyright (c) 2001-2009, brian d foy, All Rights Reserved.
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191       You may redistribute this under the same terms as Perl itself.
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195perl v5.16.3                      2013-03-04                    App::Cpan(3pm)