Linux中的sh+source+export

 

实例：

1） source1.sh

# ! / bin / sh

echo   " -------------------------------- "

var1 = var1v

source source2 . sh

echo   $ var1
echo   $ var2

echo   " --------------------------------- "

sh source3 . sh

echo   $ var1
echo   $ var3

echo   " ---------------------------------- "

export var = varv
sh source4 . sh
echo   $ var

echo   " ---------------------------------- "

 

2) source2.sh

# ! / bin / sh

echo   start  suorce2

echo   $ var1

var1 = var1insource2
var2 = var2v

echo   $ var1
echo   $ var2
echo   end  source2

 

3) source3.sh

# ! / bin / sh

echo   start  source3
echo   $ var1

var1 = var1insource3
var3 = var3v

echo   $ var1
echo   $ var3
echo   end  source3

 

4) source4.sh

# ! / bin / sh

echo   start  source4

echo   $ var

var = varinsource4

echo   $ var
echo   end  source4

 

 

结果：

 

结论： http://www.cnblogs.com/itech/archive/2009/09/22/1571896.html

 

完!