Perl中一种有趣输入的方法,钻石操作符
例子:
它会把fred文件中的内容,当做输入流,进行处理,默认会在$_进行读取
例子:
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- [root@zsd script]# cat ex1_2.pl
- #!/usr/bin/perl
- while(>){
- chomp;
- print "It was $_ that I saw!\n";
- }
- [root@zsd script]# cat fred
- hello everyone
- i see
- sky is great player
- [root@zsd script]# ./ex1_2.pl fred
- It was hello everyone that I
- It was i see that I
- It was sky is great player that I
- [root@zsd script]#