我正在使用Linux机器，在从Cpan安装JSON Perl模块时，遇到YAML未安装错误。任何帮助都是非常感谢的。

cpan[1]>install JSON

anifying blib/man3/JSON::backportPP::Boolean.3pm
Manifying blib/man3/JSON::backportPP.3pm
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ERROR: Can't create '/usr/local/share/man/man3'
Do not have write permissions on '/usr/local/share/man/man3'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 at -e line 1
make: *** [pure_site_install] Error 13
  MAKAMAKA/JSON-2.90.tar.gz
  /usr/bin/make install  -- NOT OK
----
  You may have to su to root to install the package
  (Or you may want to run something like
    o conf make_install_make_command 'sudo make'
  to raise your permissions.Warning (usually harmless): 'YAML' not installed, will not store persistent state

当我试图安装YAMl时，我得到这个错误。

cpan[1]>install YAML

ERROR: Can't create '/usr/local/share/man/man3'
Do not have write permissions on '/usr/local/share/man/man3'
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 at -e line 1
make: *** [pure_site_install] Error 13
  INGY/YAML-1.15.tar.gz
  /usr/bin/make install  -- NOT OK
----
  You may have to su to root to install the package
  (Or you may want to run something like
    o conf make_install_make_command 'sudo make'
  to raise your permissions.Warning (usually harmless): 'YAML' not installed, will not store persistent state
Failed during this command:
 TYEMQ/Algorithm-Diff-1.1903.tar.gz           : install NO
 NEILB/Text-Diff-1.43.tar.gz                  : install NO
 INGY/Spiffy-0.46.tar.gz                      : install NO
 INGY/Test-Base-0.88.tar.gz                   : install NO
 INGY/Test-YAML-1.06.tar.gz                   : install NO
 INGY/YAML-1.15.tar.gz

先谢了