强悍的8miu BLOG,去年写的内容，当时缓存下来了……

 

sudo apt-get

mkdir

rmdir 

vm

rm -r

rm -f

 

-----------------------vim------------------------

1.0

a

:wq

wim filename

1.1

# , search backward

 

 dd

 u

 

 U

 i

 

 

------------------------perl------------------------

1.0

#!/usr/bin/perl

use 5.010 ;

 

1.1 scalar

chomp,<STDIN>,undef

 

 lt,eq,gt

 le,ne,ge

 

variable interpolation !  ,  excellent!

print/say list.                 ,   say "result :", $first*$second;

perl -w filename

 

1.2 plural

print sort <STDIN>;

reverse

dummy_item

foreach

$#arrayname

 

arrayname[$#arrayname]=last_array_value;

arrayname[-1]=last_array_value;