Ubuntu下安装Perl的扩展包很是简单，只需要简单的步骤就可以了。

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sudo 
cpan
cpan> 
install 
Bundle::CPANPLUS::Dependencies
cpan> 
install 
Bundle::CPANPLUS

整个过程需要些时间。当安装完毕，接下来就可以使用cpan命令来安装扩展包了，如要安装Text::Autoformat扩展包，

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cpan[3]> 
install 
Text::Autoformat
Reading 
'/home/richard/.cpan/Metadata'
  
Database was generated on Tue, 05 May 2015 10:41:02 GMT
Running 
install 
for 
module 
'Text::Autoformat'
Running 
make 
for 
N
/NE/NEILB/Text-Autoformat-1
.71.
tar
.gz
Fetching with LWP:
http:
//mirror
.as24220.net
/pub/cpan/authors/id/N/NE/NEILB/Text-Autoformat-1
.71.
tar
.gz
Fetching with LWP:
http:
//mirror
.as24220.net
/pub/cpan/authors/id/N/NE/NEILB/CHECKSUMS
Checksum 
for 
/home/richard/
.cpan
/sources/authors/id/N/NE/NEILB/Text-Autoformat-1
.71.
tar
.gz ok
Scanning cache 
/home/richard/
.cpan
/build 
for 
sizes
............................................................................DONE
 
  
CPAN.pm: Building N
/NE/NEILB/Text-Autoformat-1
.71.
tar
.gz
 
Checking prerequisites...
  
requires:
    
!  Text::Reform is not installed
 
ERRORS
/WARNINGS 
FOUND IN PREREQUISITES.  You may wish to 
install 
the versions
of the modules indicated above before proceeding with this installation
 
Created MYMETA.yml and MYMETA.json
Creating new 
'Build' 
script 
for 
'Text-Autoformat' 
version 
'1.71'
---- Unsatisfied dependencies detected during ----
----     NEILB
/Text-Autoformat-1
.71.
tar
.gz    ----
    
Text::Reform [requires]
Running Build 
test
  
Delayed 
until 
after prerequisites
Running Build 
install
  
Delayed 
until 
after prerequisites
Running 
install 
for 
module 
'Text::Reform'
Running 
make 
for 
C
/CH/CHORNY/Text-Reform-1
.20.
tar
.gz
Fetching with LWP:
http:
//mirror
.as24220.net
/pub/cpan/authors/id/C/CH/CHORNY/Text-Reform-1
.20.
tar
.gz
Fetching with LWP:
http:
//mirror
.as24220.net
/pub/cpan/authors/id/C/CH/CHORNY/CHECKSUMS
Checksum 
for 
/home/richard/
.cpan
/sources/authors/id/C/CH/CHORNY/Text-Reform-1
.20.
tar
.gz ok
 
  
CPAN.pm: Building C
/CH/CHORNY/Text-Reform-1
.20.
tar
.gz
 
Created MYMETA.yml and MYMETA.json
Creating new 
'Build' 
script 
for 
'Text-Reform' 
version 
'1.20'
Building Text-Reform
  
CHORNY
/Text-Reform-1
.20.
tar
.gz
  
.
/Build 
-- OK
Running Build 
test
t
/00
.load.t .. 1
/1 
# Testing Text::Reform 1.20
t
/00
.load.t .. ok   
t
/pod
.t ...... skipped: Test::Pod 1.14 required 
for 
testing POD
t
/reform
.t ... ok     
All tests successful.
Files=3, Tests=67,  0 wallclock secs ( 0.04 usr  0.01 sys +  0.08 cusr  0.03 csys =  0.16 CPU)
Result: PASS
  
CHORNY
/Text-Reform-1
.20.
tar
.gz
  
.
/Build 
test 
-- OK
Running Build 
install
Building Text-Reform
Installing 
/usr/local/share/perl/5
.18.2
/Text/Reform
.pm
Installing 
/usr/local/man/man3/Text
::Reform.3pm
  
CHORNY
/Text-Reform-1
.20.
tar
.gz
  
sudo 
.
/Build 
install  
-- OK
Running Build 
for 
N
/NE/NEILB/Text-Autoformat-1
.71.
tar
.gz
  
Has already been unwrapped into directory 
/home/richard/
.cpan
/build/Text-Autoformat-1
.71-u0bs8b
 
  
CPAN.pm: Building N
/NE/NEILB/Text-Autoformat-1
.71.
tar
.gz
 
Building Text-Autoformat
  
NEILB
/Text-Autoformat-1
.71.
tar
.gz
  
.
/Build 
-- OK
Running Build 
test
t
/00
.load.t .......... 1
/1 
# Testing Text::Autoformat 1.71
t
/00
.load.t .......... ok   
t
/01
.ignore.t ........ ok   
t
/02
.wide-numbers.t .. ok   
All tests successful.
Files=3, Tests=4,  0 wallclock secs ( 0.04 usr  0.00 sys +  0.13 cusr  0.04 csys =  0.21 CPU)
Result: PASS
  
NEILB
/Text-Autoformat-1
.71.
tar
.gz
  
.
/Build 
test 
-- OK
Running Build 
install
Building Text-Autoformat
Installing 
/usr/local/share/perl/5
.18.2
/Text/Autoformat
.pm
Installing 
/usr/local/man/man3/Text
::Autoformat.3pm
  
NEILB
/Text-Autoformat-1
.71.
tar
.gz
  
sudo 
.
/Build 
install  
-- OK