Perl命令行输入？

Question

How do I setup a Perl script so that the input on the command line denotes what/where the script looks at (what directory)?

example:

cdm line:>perl text.pl C:/pathtodirectory/

In the script I get a veriable $path to be set to: C:/pathtodirectory

Thanks

Answer 1

Command line arguments are placed in the array @ARGV. You can get them like:

my $path = shift @ARGV;
# or just (shift defaults to using @ARGV outside of any function):
my $path = shift;

Answer 2

You need to use the @ARGV array.

So in your text.pl :

my $path = shift(@ARGV);

or

my $path = shift; # @ARGV is the default in the main part of your script

@ARGV is each item on the command line starting from index 0 ... so if you had more options like

text.pl some/path some_other_option

some_other_option would be available as $ARGV[1]

For more advanced path processing take a look at the Getopt::Std or Getopt::Long modules (they should be included with Perl by default.

Answer 3

@ARGV预定义变量包含脚本的命令行参数。

Answer 4

In this case you can use perl's Getopt::Long module documented here .

Or you can simply parse ARGV :

$ perl -MData::Dumper -e 'print Dumper \@ARGV;' foo bar