ksh获取分配中的退出状态 [英] ksh get exit status in assignment

问题描述

我需要知道执行分配的命令的退出状态.

I need to know the exit status of command that do assignment.

export VALUE=`My_Get_Value 10`

我需要知道My_Get_Value脚本的退出状态.

I need to know the exit status of My_Get_Value script.

在 $?中，我具有分配状态.

In the $? I have the status of assignment itself.

我在KSH v93中需要它

I need it in KSH v93

推荐答案

export VALUE=$(My_Get_Value 10)不是赋值语句；它是赋值语句.它是对export命令的调用，该命令接受 look 像赋值语句一样的参数.最简单的解决方法是将分配与呼叫export分开.

export VALUE=$(My_Get_Value 10) is not an assignment statement; it is a call to the export command, which takes arguments that look like assignment statements. The easiest fix is to separate the assignment from the call to export.

VALUE=$(My_Get_Value 10)
mgv_exit=$?
export VALUE

在赋值之前或之后调用export都没关系(只要您在赋值和保存$?的值之间不调用它)，因为export将属性设置为名称 VALUE，而不是名为VALUE的参数的值.以下是相同的:

It doesn't matter if you call export before or after the assignment (as long as you don't call it between the assignment and saving the value of $?), since export sets an attribute on the name VALUE, not the value of the parameter named VALUE. The following is identical:

export VALUE
VALUE=$(My_Get_Value 10)
mgv_exit=$?

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