How to install a module from CPAN

- 


perl -MCPAN -e shell
I always seem to forget this simple syntax, so I thought it would be good to post it where I can find it. Where else, my blog -- by the way, this is another excellent use for blogs. Not only do we publish information for others to find, but occasionally a blog is the best place to put frequently accessed info that the author may need. At least I know the source is reliable. :-)

How do I install a module from CPAN?
The easiest way is to have a module also named CPAN do it for you. This module comes with perl version 5.004 and later.

To get a cpan shell, try either cpan:

Linux:

  $ cpan

Windows:

 C:\>cpan

or the more complete command:

$perl -MCPAN -e shell

Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.7601)

ReadLine support available (try 'install Bundle::CPAN')

cpan>

The first time the command runs, it will prompt for a series of configuration questions.
Now, within the shell, you can install a module
 
 cpan> install Some::Module

To manually install the CPAN module, or any well-behaved CPAN module for that matter, follow these steps:

  1. Unpack the source into a temporary area.

  2. perl Makefile.PL

  3. make

  4. make test

  5. make install
If your version of perl is compiled without dynamic loading, then you just need to replace step 3 (make) with make perl and you will get a new perl binary with your extension linked in.

Comments

Post a Comment

Popular posts from this blog

Ping Multiple Hosts Using Bash Nmap and Fping

-
Image
I explained how to get a list of hosts using nmap -- using-nmap-to-generate-host-lists.html , but here is another look at the subject. The question is, how do I ping multiple hosts to find out which ones are down? Sure this could be considered a topic of system monitoring, but maybe you just want to reboot a bunch of machines, and make sure they all come back online. This quick check will tell you whether there is a problem or not. Here are three methods for pinging a list of hosts: 1.) for host in `cat all.txt `;do ping -c 1 $host; done 2.) nmap -sP -R -iL all.txt 3.) sudo fping -u < xyz/all.txt First, we assume that you have a text file named all.txt that contains a list of hostnames, one per line. Obviously, the examples here contain fake hostnames, domain names and IPs, as described in another article about vi: vim-tips-search-and-replace.html . --- all.txt --- xyz-1 xyz-2 xyz-3 xyz-4 xyz-5 xyz-6 xyz-7 xyz-8 --- end all.txt --- 1.) Use a for loop in ...
Read more

How to Obtain Bitcoin and Other Cryptocurrencies

-
How to Buy, Accept, or Mine Bitcoin and Other Cryptocurrencies - Quick Intro Buy Bitcoin on an Exchange One easy way to get started with owning bitcoin is to buy some on an exchange, such as Coinbase. I offer this link because I think it is helpful, not just because I could get $10.  Sometimes you can't tell why people recommend things.  I figure, if you plan to sign up anyway, why not save a little money? With this referral link, we each get $10 in bitcoin after the new account is opened, and a trade of $100 or more is completed: https://www.coinbase.com/join/592f371c2ae3540ae4a4eb70 Note that it is not necessary to buy a full coin, but there are commissions for buying and selling, and  mining fees for transfers.   To minimize commissions, try entering different amounts to see how much makes sense, before completing the transaction.  For example, buying $100 of bitcoin may cost as much in commissions as buying $200 worth, or around $3.00.  In 2...
Read more

Using nmap to Generate Host Lists

-
Image
An easy way to get a list of hosts from a single domain that you are a part of, is to query DNS host -l mydomain.com But that is not always practical. Sometimes you have machines that are in different domains, but they all are part of a network you manage. Rather than trying write a script that pings hosts and reports the output, just use nmap for a very fast scan. To scan all hosts in a list of subnets 1) Create a subnets.dat file with one subnet on each line: $ cat subnets.dat 192.168.0.* 192.168.1.* 2) Run nmap with the subnets.dat file as input $ nmap -sP -R -iL subnets.dat Reading target specifications from FILE: subnets.dat Starting nmap V. 3.00 ( www.insecure.org/nmap/ ) Host (192.168.0.0) appears to be down. Host box1.mydomain.com (192.168.0.1) appears to be up. Host box2.mydomain.com (192.168.0.2) appears to be down. Host box3.mydomain.com (192.168.0.3) appears to be up. Host (192.168.0.4) appears to be up. ... Notice how names are resolved ...
Read more