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[size=6]°æÖ÷ÇëÎÊÎÒ¿ÉÒÔÕâÑù¸³ÖµÂð?:[/size][size=5]#!/bin/bash[/size]
[size=5]v1=1[/size]
[size=5]v2=2[/size]
[size=5]v3=3[/size]
[size=5]v4=$v1+$v2+$v3[/size]
[size=5]echo v4[/size]
[size=5][/size]
[size=5][/size]
[size=5][/size]
[size=5]Çë°æÖ÷Ö¸µã,лл!!![/size] [code]
dx@cm-dx ~
$ v1=1
dx@cm-dx ~
$ v2=2
dx@cm-dx ~
$ v3=3
dx@cm-dx ~
$ v4=$(( $v1+$v2+$v3 ))
dx@cm-dx ~
$ echo $v4
6
dx@cm-dx ~
$
[/code] [QUOTE=davi][code]
dx@cm-dx ~
$ v1=1
dx@cm-dx ~
$ v2=2
dx@cm-dx ~
$ v3=3
dx@cm-dx ~
$ v4=$(( $v1+$v2+$v3 ))
dx@cm-dx ~
$ echo $v4
6
dx@cm-dx ~
$
[/code][/QUOTE]
лл°æÖ÷£¡£¡£¡ Áí£ºÔÚ $(( ... )) ÖУ¬±äÁ¿ÃûÇ°ÃæµÄ $ ·ûºÅ¿ÉÒÔÊ¡ÂÔ¡£È磺[code]
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]v1=2
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]v2=3
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]v3=$(( v1 + v2 ))
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]echo $v3
5
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]o
[/code] [QUOTE=dearvoid]Áí£ºÔÚ $(( ... )) ÖУ¬±äÁ¿ÃûÇ°ÃæµÄ $ ·ûºÅ¿ÉÒÔÊ¡ÂÔ¡£È磺[code]
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]v1=2
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]v2=3
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]v3=$(( v1 + v2 ))
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]echo $v3
5
[color=blue]-(dearvoid@LinuxEden:tty3)-(~/tmp)-
[272 0] # [/color]o
[/code][/QUOTE]
лÁË.Êܵ½.ÎÒ»áºÃºÃѧϰÌìÌìÏòÉÏ!!! #!/bin/bash
v1=1
v2=2
v3=3
let v4=$v1+$v2+$v3
echo "$v4"
Ò³:
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