Perl use和require区别

use 发生在编译期间,代码没有运行use是在当前默认的@INC里面去寻找,一旦模块不在@INC中的话,use是不可以引入的,但是require是可以指定路径require 是编译时引入[oracle@dwh1 lib]$ pwd/oracle/dev/lib[oracle@dwh1 lib]$ cat Mypack.pm use strict;use warnings;sub printlog { print "test\n";};1;[oracle@dwh1 myapp]$ perl a3.pl Can't locate Mypack.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at a3.pl line 2.BEGIN failed--compilation aborted at a3.pl line 2.[oracle@dwh1 myapp]$ cat a3.pl unshift @INC,"/oracle/dev/lib";require  Mypack;printlog();[oracle@dwh1 myapp]$ perl a3.pl test