Perl::Critic(perlcritic)を使用して静的解析、コーディング規約テストを実施(実施編：コマンド) ref: http://qiita.com/sfida11/items/22e6e768a6b4e65bddae

file0.txt

# perlcritic testCode.pl
Code before strictures are enabled at line 1, column 1.  See page 429 of PBP.  (Severity: 5)
#

file1.txt

# cat testCode.pl
print "Hello world";

# 

file2.txt

# perlcritic --exclude=stric testCode.pl     
testCode.pl source OK
# 

file3.txt

SEVERITY NAME   ...is equivalent to...   SEVERITY NUMBER
--------------------------------------------------------
--severity gentle                           --severity 5
--severity stern                            --severity 4
--severity harsh                            --severity 3
--severity cruel                            --severity 2
--severity brutal                           --severity 1

file4.txt

# perlcritic --severity=2 testCode.pl
Module does not end with "1;" at line 1, column 1.  Must end with a recognizable true value.  (Severity: 4)
Code not contained in explicit package at line 1, column 1.  Violates encapsulation.  (Severity: 4)
No package-scoped "$VERSION" variable found at line 1, column 1.  See page 404 of PBP.  (Severity: 2)
Code before strictures are enabled at line 1, column 1.  See page 429 of PBP.  (Severity: 5)
Code before warnings are enabled at line 1, column 1.  See page 431 of PBP.  (Severity: 4)
# 

file5.txt

# perlcritic --help
Usage:
      perlcritic [-12345 | --brutal | --cruel | --harsh | --stern | --gentle]
                 [--severity number | name] [{-p | --profile} file | --noprofile]
                 [--top [ number ]] [--theme expression] [--include pattern]
                 [--exclude pattern] [{-s | --single-policy} pattern]
                 [--only | --noonly] [--profile-strictness {warn|fatal|quiet}]
                 [--force | --noforce] [--statistics] [--statistics-only]
                 [--count | -C] [--verbose {number | format}] [--allow-unsafe]
                 [--color | --nocolor] [--pager pager] [--quiet]
                 [--color-severity-highest color_specification]
                 [--color-severity-high color_specification]
                 [--color-severity-medium color_specification]
                 [--color-severity-low color_specification]
                 [--color-severity-lowest color_specification]
                 [--files-with-violations | -l]
                 [--files-without-violations | -L]
                 [--program-extensions file_name_extension]
                 {FILE | DIRECTORY | STDIN}

      perlcritic --profile-proto

      perlcritic { --list | --list-enabled | --list-themes | --doc pattern [...] }

      perlcritic { --help | --options | --man | --version }

#