#!/bin/bash -
function mytest()
{
echo "arg1 = $1"
if [ $1 = "1" ] ;then
return 1
else
return 0
fi
}
if mytest 2; then
echo "aaaaaaaaaa"
fi
执行结果：
稍微改一下
#!/bin/bash -
function mytest()
{
echo "arg1 = $1"
if [ $1 = "1" ] ;then
return 1
else
return 0
fi
}
if mytest 1; then
echo "aaaaaaaaaa"
fi
---------------------------------------------------------------------------
shell 中定义的变量是全局的，函数上面定义的变量在函数内部仍然是可见的
#!/bin/bash -
g_var=
function mytest2()
{
echo "mytest2"
echo "args $1"
g_var=$1
return 0
}
mytest2 1
echo "return $?"
echo
echo "g_var=$g_var"
原文：http://www.cnblogs.com/oxspirt/p/7246428.html