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/boot         500 Mb
/           22400 Mb
...
/usr/share  10200 Mb
/var         2400 Mb
/tmp         1700 Mb

$ sudo mkdir -p /rad/perl
$ sudo chown -R /rad xiong:developer

$ ./Configure -Dprefix=/rad/perl -Dusethreads

Directories to use for library searches?
[/usr/local/lib /lib /usr/lib /usr/lib64]

What optimizer/debugger flag should be used? [-O2]

Pathname where the public executables will reside? (~name ok)
[/rad/perl/bin]

Pathname where the private library files will reside? (~name ok)
[/rad/perl/lib/5.10.1] private

Pathname for the site-specific library files? (~name ok)
[/rad/perl/lib/site_perl/5.10.1] /rad/perl/lib/cpan

Colon-separated list of additional directories for perl to search? [no
+ne] /rad/perl/lib/more

Do you want to install perl as /usr/bin/perl? [n]

Where do the main Perl5 manual pages (source) go? (~name ok)
[/rad/perl/man/man1] 
...
Where do the perl5 library man pages (source) go? (~name ok)
[/rad/perl/man/man3] 
What suffix should be used for the perl5 library man pages? [3]

$ make
$ make test
$ make install

#!/rad/perl/bin/perl
#       hello-simple.pl
...
use feature qw(switch say state);

say 'Hello, World!';

cpan
cpan2dist
cpanp
cpan-run-perl

#!/rad/perl/bin/perl
    eval 'exec /rad/perl/bin/perl -S $0 ${1+"$@"}'
    if $running_under_some_shell;
#!/usr/bin/perl

#!/rad/perl/bin/perl

> o conf init

Would you like me to configure as much as possible automatically? no

Always commit changes to config variables to disk? yes

Policy on building prerequisites ...? follow
Policy on installing 'build_requires' modules ...? yes

 <makepl_arg>
Parameters for the 'perl Makefile.PL' command? 
...
    INSTALLMAN3DIR=/rad/perl/man/man3 
    INSTALLSCRIPT=/rad/perl/bin 
    INSTALLBIN=/rad/perl/bin

<mbuildpl_arg>
Parameters for the 'perl Build.PL' command? 
...
    --installman3dir=/rad/perl/man/man3 
    --installscript=/rad/perl/bin 
    --installbin=/rad/perl/bin

Do you want to turn on colored output? yes

If no urllist has been chosen yet, would you prefer CPAN.pm to connect
to the built-in default sites without asking? (yes/no)? yes

> s reconfigure

Section to configure: : 5
Follow prerequisites? : 2

Section to configure: : 6
Makefile.PL flags? : ***

Section to configure: : 6
Build.PL and Build flags? : $$$

Section to configure: : 7