[英]perl input from STDIN pipe only works with perl in front of script
I am attempting to read from STDIN with a perl script. 我正在尝试使用Perl脚本从STDIN中读取。
Here is the script I am using for testing: 这是我用于测试的脚本:
#!/usr/bin/perl
foreach $line (<>)
{
print $line;
}
So from the command prompt, I type: 因此,在命令提示符下,键入:
> cat somefile | testscript
>
It returns nothing with no error. 它不返回任何错误。
I then type the following: 然后输入以下内容:
> cat somefile | perl testscript
> *the contents of the file are printed line by line*
I really do not want the users to have to append perl in front of the script if I do not have to. 我真的不想让用户不必在脚本前附加perl。
Thanks for reading. 谢谢阅读。
I think you run two different versions of Perl. 我认为您运行两种不同的Perl版本。 What is the output of "which perl"?
“哪个perl”的输出是什么?
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