CPAN::FirstTime man page on AIX

Man page or keyword search:  
man Server   4752 pages
apropos Keyword Search (all sections)
Output format
AIX logo
[printable version]

CPAN::FirstTime(3)     Perl Programmers Reference Guide	    CPAN::FirstTime(3)

       CPAN::FirstTime - Utility for CPAN::Config file Initialization


       The init routine asks a few questions and writes a CPAN/ or
       CPAN/ file (depending on what it is currently using).

       In the following all questions and explanations regarding config vari‐
       ables are collected.

	 Normally keeps config variables in memory and changes need to
	 be saved in a separate 'o conf commit' command to make them permanent
	 between sessions. If you set the 'auto_commit' option to true,
	 changes to a config variable are always automatically committed to

	 Always commit changes to config variables to disk?

       build_cache can limit the size of the disk area for keeping the build
	 directories with all the intermediate files.

	 Cache size for build directory (in MB)?

	 Directory where the build process takes place?

	 Until version 1.88 never trusted the contents of the
	 build_dir directory between sessions. Since 1.88_58 has a
	 YAML-based mechanism that makes it possible to share the contents of
	 the build_dir/ directory between different sessions with the same
	 version of perl. People who prefer to test things several days before
	 installing will like this feature because it safes a lot of time.

	 If you say yes to the following question, CPAN will try to store
	 enough information about the build process so that it can pick up in
	 future sessions at the same state of affairs as it left a previous

	 Store and re-use state information about distributions between sessions?

	 When a module declares another one as a 'build_requires' prerequisite
	 this means that the other module is only needed for building or test‐
	 ing the module but need not be installed permanently. In this case
	 you may wish to install that other module nonetheless or just keep it
	 in the 'build_dir' directory to have it available only temporarily.
	 Installing saves time on future installations but makes the perl
	 installation bigger.

	 You can choose if you want to always install (yes), never install
	 (no) or be always asked. In the latter case you can set the default
	 answer for the question to yes (ask/yes) or no (ask/no).

	 Policy on installing 'build_requires' modules (yes, no, ask/yes,

	 To considerably speed up the initial CPAN shell startup, it is possi‐
	 ble to use Storable to create a cache of metadata. If Storable is not
	 available, the normal index mechanism will be used.

	 Note: this mechanism is not used when use_sqlite is on and SQLLite is

	 Cache metadata (yes/no)?

	 CPAN packages can be digitally signed by authors and thus verified
	 with the security provided by strong cryptography. The exact mecha‐
	 nism is defined in the Module::Signature module. While this is gener‐
	 ally considered a good thing, it is not always convenient to the end
	 user to install modules that are signed incorrectly or where the key
	 of the author is not available or where some prerequisite for Mod‐
	 ule::Signature has a bug and so on.

	 With the check_sigs parameter you can turn signature checking on and
	 off. The default is off for now because the whole tool chain for the
	 functionality is not yet considered mature by some. The author of would recommend setting it to true most of the time and turn‐
	 ing it off only if it turns out to be annoying.

	 Note that if you do not have Module::Signature installed, no signa‐
	 ture checks will be performed at all.

	 Always try to check and verify signatures if a SIGNATURE file is in
	 the package and Module::Signature is installed (yes/no)?

	 When you have Term::ANSIColor installed, you can turn on colorized
	 output to have some visual differences between normal output,
	 warnings, debugging output, and the output of the modules being
	 installed. Set your favorite colors after some experimenting with the
	 Term::ANSIColor module.

	 Do you want to turn on colored output?

	 Color for normal output?

	 Color for warnings?

	 Color for debugging messages?

	 The prompt of the cpan shell can contain the current command number
	 for easier tracking of the session or be a plain string.

	 Do you want the command number in the prompt (yes/no)?

	 Shall we always set the FTP_PASSIVE environment variable when dealing
	 with ftp download (yes/no)?

       getcwd changes the current working directory often and needs to
	 determine its own current working directory. Per default it uses
	 Cwd::cwd but if this doesn't work on your system for some reason,
	 alternatives can be configured according to the following table:

	     cwd	 Cwd::cwd
	     getcwd	 Cwd::getcwd
	     fastcwd	 Cwd::fastcwd
	     backtickcwd external command cwd

	 Preferred method for determining the current working directory?

	 If you have one of the readline packages (Term::ReadLine::Perl,
	 Term::ReadLine::Gnu, possibly others) installed, the interactive CPAN
	 shell will have history support. The next two questions deal with the
	 filename of the history file and with its size. If you do not want to
	 set this variable, please hit SPACE RETURN to the following question.

	 File to save your history?

	 Number of lines to save?

	 Sometimes you may wish to leave the processes run by CPAN alone with‐
	 out caring about them. Because the Makefile.PL or the Build.PL some‐
	 times contains question you're expected to answer, you can set a
	 timer that will kill a 'perl Makefile.PL' process after the specified
	 time in seconds.

	 If you set this value to 0, these processes will wait forever. This
	 is the default and recommended setting.

	 Timeout for inactivity during {Makefile,Build}.PL?

	 The CPAN indexes are usually rebuilt once or twice per hour, but the
	 typical CPAN mirror mirrors only once or twice per day. Depending on
	 the quality of your mirror and your desire to be on the bleeding
	 edge, you may want to set the following value to more or less than
	 one day (which is the default). It determines after how many days downloads new indexes.

	 Let the index expire after how many days?

	 When the CPAN shell is started it normally displays a greeting mes‐
	 sage that contains the running version and the status of readline

	 Do you want to turn this message off?

	 Unless you are accessing the CPAN on your filesystem via a file: URL, needs to keep the source files it downloads somewhere. Please
	 supply a directory where the downloaded files are to be kept.

	 Download target directory?

	 When loads a module it needs for some optional feature, it
	 usually reports about module name and version. Choose 'v' to get this
	 message, 'none' to suppress it.

	 Verbosity level for loading modules (none or v)?

	 Every Makefile.PL is run by perl in a separate process. Likewise we
	 run 'make' and 'make install' in separate processes. If you have any
	 parameters (e.g. PREFIX, LIB, UNINST or the like) you want to pass to
	 the calls, please specify them here.

	 If you don't understand this question, just press ENTER.

	 Typical frequently used settings:

	     PREFIX=~/perl    # non-root users (please see manual for more hints)

	 Parameters for the 'perl Makefile.PL' command?

	 Parameters for the 'make' command? Typical frequently used setting:

	     -j3	      # dual processor system (on GNU make)

	 Your choice:

	 Parameters for the 'make install' command?  Typical frequently used

	     UNINST=1	      # to always uninstall potentially conflicting files

	 Your choice:

	 Do you want to use a different make command for 'make install'?  Cau‐
	 tious people will probably prefer:

	     su root -c make
	     sudo make
	     /path1/to/sudo -u admin_account /path2/to/make

	 or some such. Your choice:

	 A Build.PL is run by perl in a separate process. Likewise we run
	 './Build' and './Build install' in separate processes. If you have
	 any parameters you want to pass to the calls, please specify them

	 Typical frequently used settings:

	     --install_base /home/xxx		  # different installation directory

	 Parameters for the 'perl Build.PL' command?

	 Parameters for the './Build' command? Setting might be:

	     --extra_linker_flags -L/usr/foo/lib  # non-standard library location

	 Your choice:

	 Parameters for the './Build install' command? Typical frequently used

	     --uninst 1				  # uninstall conflicting files

	 Your choice:

	 Do you want to use a different command for './Build install'? Sudo
	 users will probably prefer:

	     su root -c ./Build
	     sudo ./Build
	     /path1/to/sudo -u admin_account ./Build

	 or some such. Your choice:

	 What is your favorite pager program?

	 When you have Module::Build installed and a module comes with both a
	 Makefile.PL and a Build.PL, which shall have precedence?

	 The main two standard installer modules are the old and well estab‐
	 lished ExtUtils::MakeMaker (for short: EUMM) which uses the Make‐
	 file.PL. And the next generation installer Module::Build (MB) which
	 works with the Build.PL (and often comes with a Makefile.PL too). If
	 a module comes only with one of the two we will use that one but if
	 both are supplied then a decision must be made between EUMM and MB.
	 See also for a dis‐
	 cussion about the right default.

	 Or, as a third option you can choose RAND which will make a random
	 decision (something regular CPAN testers will enjoy).

	 In case you can choose between running a Makefile.PL or a Build.PL,
	 which installer would you prefer (EUMM or MB or RAND)?

       prefs_dir can store customized build environments based on regular
	 expressions for distribution names. These are YAML files where the
	 default options for and the environment can be overridden and
	 dialog sequences can be stored that can later be executed by an object. The distribution comes with some prefab
	 YAML files that cover sample distributions that can be used as blue‐
	 prints to store one own prefs. Please check out the distroprefs/
	 directory of the distribution to get a quick start into the
	 prefs system.

	 Directory where to store default options/environment/dialogs for
	 building modules that need some customization?

	 The CPAN module can detect when a module which you are trying to
	 build depends on prerequisites. If this happens, it can build the
	 prerequisites for you automatically ('follow'), ask you for confirma‐
	 tion ('ask'), or just ignore them ('ignore'). Please set your policy
	 to one of the three values.

	 Policy on building prerequisites (follow, ask or ignore)?

       randomize_urllist can introduce some randomness when using hosts for download
	 that are configured in the urllist parameter. Enter a numeric value
	 between 0 and 1 to indicate how often you want to let try a
	 random host from the urllist. A value of one specifies to always use
	 a random host as the first try. A value of zero means no randomness
	 at all. Anything in between specifies how often, on average, a random
	 host should be tried first.

	 Randomize parameter

	 By default, each time the CPAN module is started, cache scanning is
	 performed to keep the cache size in sync. To prevent this, answer

	 Perform cache scanning (atstart or never)?

	 What is your favorite shell?

	 During the 'r' command finds modules without version number.
	 When the command finishes, it prints a report about this. If you want
	 this report to be very verbose, say yes to the following variable.

	 Show all individual modules that have no $VERSION?

	 The 'd' and the 'm' command normally only show you information they
	 have in their in-memory database and thus will never connect to the
	 internet. If you set the 'show_upload_date' variable to true, 'm' and
	 'd' will additionally show you the upload date of the module or dis‐
	 tribution. Per default this feature is off because it may require a
	 net connection to get at the upload date.

	 Always try to show upload date with 'd' and 'm' command (yes/no)?

	 During the 'r' command finds modules with a version number of
	 zero. When the command finishes, it prints a report about this. If
	 you want this report to be very verbose, say yes to the following

	 Show all individual modules that have a $VERSION of zero?

	 When uses the tar command, which switch for the verbosity
	 shall be used? Choose 'none' for quiet operation, 'v' for file name
	 listing, 'vv' for full listing.

	 Tar command verbosity level (none or v or vv)?

	 The next option deals with the charset (aka character set) your ter‐
	 minal supports. In general, CPAN is English speaking territory, so
	 the charset does not matter much but some CPAN have names that are
	 outside the ASCII range. If your terminal supports UTF-8, you should
	 say no to the next question. If it expects ISO-8859-1 (also known as
	 LATIN1) then you should say yes. If it supports neither, your answer
	 does not matter because you will not be able to read the names of
	 some authors anyway. If you answer no, names will be output in UTF-8.

	 Your terminal expects ISO-8859-1 (yes/no)?

	 When using Term::ReadLine, you can turn ornaments on so that your
	 input stands out against the output from

	 Do you want to turn ornaments on?

	 The goal of the CPAN Testers project ( is to
	 test as many CPAN packages as possible on as many platforms as possi‐
	 ble.  This provides valuable feedback to module authors and potential
	 users to identify bugs or platform compatibility issues and improves
	 the overall quality and value of CPAN.

	 One way you can contribute is to send test results for each module
	 that you install.  If you install the CPAN::Reporter module, you have
	 the option to automatically generate and email test reports to CPAN
	 Testers whenever you run tests on a CPAN package.

	 See the CPAN::Reporter documentation for additional details and con‐
	 figuration settings.  If your firewall blocks outgoing email, you
	 will need to configure CPAN::Reporter before sending reports.

	 Email test reports if CPAN::Reporter is installed (yes/no)?

	 CPAN::SQLite is a layer between the index files that are downloaded
	 from the CPAN and that speeds up metadata queries and reduces
	 memory consumption of considerably.

	 Use CPAN::SQLite if available? (yes/no)?

	 Both and YAML::Syck are capable of deserialising code. As
	 this requires a string eval, which might be a security risk, you can
	 use this option to enable or disable the deserialisation of code.

	 Do you want to enable code deserialisation (yes/no)?

	 At the time of this writing there are two competing YAML modules, and YAML::Syck. The latter is faster but needs a C compiler
	 installed on your system. There may be more alternative YAML conform‐
	 ing modules but at the time of writing a potential third player,
	 YAML::Tiny, seemed not powerful enough to work with

	 Which YAML implementation would you prefer?

       This program is free software; you can redistribute it and/or modify it
       under the same terms as Perl itself.

perl v5.8.8			  2008-09-19		    CPAN::FirstTime(3)
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
More information is available in HTML format for server AIX

List of man pages available for AIX

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net