linux - 如何正确运行 Perl "one liner"命令行脚本？

Question

我已经浏览了很多教程，但我仍然无法弄清楚我做错了什么......我正在尝试下面的代码(在 .pl Perl 文件中，作为可执行文件):

#!/usr/bin/perl

perl -e 'print "Hello";' 

我运行这个脚本并得到:

Execution of /home/user1/Desktop/file_backups.pl aborted due to compilation errors.

(我刚开始使用Perl调用Linux命令行。)

Answer 1

尝试:

#!/usr/bin/perl
# This is a comment ~~~
# This script will be run as a Perl script
# since 'perl' isn't a keyword or function in Perl
# something like this must fail:
#
# perl -e 'print "Hello";' 
#
# The following should work.

print "Hello"; print " World\n";

或者，如果您希望 shell 脚本执行 Perl 代码:

#!/bin/sh
# That's a Bash script ~~~
# It's just a command line in a file ...    

perl -e 'print "Hello World";' 

背景:#! 是一个 interpreter directive .

When the command is executed, it is converted to an execution of the interpreter.