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| Language | Perl |
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| Owner | w3xue |
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| Modified | |
| Visibility | Public |
#!/usr/bin/perl
$PATH = "我是 Perl 的变量";
system('echo $PATH'); # $PATH 作为 shell 环境变量
system("echo $PATH"); # $PATH 作为 Perl 的变量
system("echo \$PATH"); # 转义 $
1;
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