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1.Exec·½·¨:
Kernel#exec·½·¨Í¨¹ýµ÷ÓÃÖ¸¶¨µÄÃüÁîÈ¡´úµ±Ç°½ø³Ì£º
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$ irb
>> exec 'echo "hello $HOSTNAME"'
hello nate.local
$
ÖµµÃ×¢ÒâµÄÊÇ£¬exec·½·¨ÓÃechoÃüÁîÀ´È¡´úÁËirb½ø³Ì´Ó¶øÍ˳öÁËirb¡£Ö÷ÒªµÄȱµãÊÇ£¬ÄãÎÞ·¨´ÓÄãµÄruby½Å±¾ÀïÖªµÀÕâ¸öÃüÁîÊdzɹ¦»¹ÊÇʧ°Ü¡£
2.System·½·¨¡£
Kernel#system·½·¨²Ù×÷ÃüÁîͬÉÏ£¬ µ«ÊÇËüÊÇÔËÐÐÒ»¸ö×ÓshellÀ´±ÜÃ⸲¸Çµ±Ç°½ø³Ì¡£Èç¹ûÃüÁîÖ´Ðгɹ¦Ôò·µ»Øtrue£¬·ñÔò·µ»Øfalse¡£
$ irb
>> system 'echo "hello $HOSTNAME"'
hello nate.local
=> true
>> system 'false'
=> false
>> puts $?
256
=> nil
>>
3.·´ÒýºÅ£¨Backticks£¬Esc¼üÏÂÃæÄǸö¼ü£©
$ irb
>> today = `date`
=> "Mon Mar 12 18:15:35 PDT 2007n"
>> $?
=> #<Process::Status: pid=25827,exited(0)>
>> $?.to_i
=> 0
ÕâÖÖ·½·¨ÊÇ×îÆÕ±éµÄÓ÷¨ÁË¡£ËüÒ²ÊÇÔËÐÐÔÚÒ»¸ö×ÓshellÖС£
4.IO#popen
$ irb
>> IO.popen("date") { |f| puts f.gets }
Mon Mar 12 18:58:56 PDT 2007
=> nil
5.open3#popen3
$ irb
>> stdin, stdout, stderr = Open3.popen3('dc')
=> [#<IO:0x6e5474>, #<IO:0x6e5438>, #<IO:0x6e53d4>]
>> stdin.puts(5)
=> nil
>> stdin.puts(10)
=> nil
>> stdin.puts("+")
=> nil
>> stdin.puts("p")
=> nil
>> stdout.gets
=> "15n"
6.Open4#popen4
$ irb
>> require "open4"
&n
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class Person
def initialize( name,age=18 )
@name = name
@age = age
@motherland = "China"
end
def talk
puts "my name is "+@name+", age is "+@age.to_s
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irb µÄÃüÁîÐÐÑ¡Ïժ×Ô¡¡Porgramming Ruby µÚ¶þ°æ£©
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phpRPC + Ruby + Arduino = 遠³Ì¿ØÖÆLED開關(?)
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關ì¶phpRPC與Arduino請×ÔÐÐGoogle
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