摘要:
#! /usr/bin/perl use strict; use warnings;print "\n _substitutions_with_s/// \n";$_ = "He's out bowling with Barney tonight.";s/Barney/Fred/;print $_. 阅读全文
摘要:
vi. To input the ^M character, press Ctrl-v , and then press Enter or return . In vim, use :set ff=unix to convert to Unix; use :set ff=dos to convert 阅读全文