Re: 怎样检查一个命令执行后的返回值？

To: "Vern Sun" <s5unty@gmail.com>
Cc: "Debian Chinese GB" <debian-chinese-gb@lists.debian.org>
Subject: Re: 怎样检查一个命令执行后的返回值？
From: "LI Daobing" <lidaobing@gmail.com>
Date: Thu, 8 Mar 2007 17:36:23 +0800
Message-id: <[🔎] 8eae5a660703080136vbd2af9fy7510b30b8fec192@mail.gmail.com>
In-reply-to: <[🔎] 3b6bb5f10703080112y40c13c4aicabe58de7ac8c491@mail.gmail.com>
References: <[🔎] 3b6bb5f10703080112y40c13c4aicabe58de7ac8c491@mail.gmail.com>

On 3/8/07, Vern Sun <s5unty@gmail.com> wrote:

我记得好像有一个系统变量记录了系统最后一次执行的命令的返回值
或者有其它什么方法可以显示某条命令执行后的返回值吗？比如这条命令：

1$ /bin/sh -c "exec ls"

echo $?


--
LI Daobing

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- 怎样检查一个命令执行后的返回值？
  - From: "Vern Sun" <s5unty@gmail.com>

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