If it doesn't have foobar, it's gonna have a nonzero error code.

如果它没有 foobar，它将有一个非零错误代码。

So you could do something like grep foobar in MCD, it's there.

所以你可以在 MCD 中执行类似 grep foobar 的操作，它就在那里。

And it's telling us that oh we have the foobar line in example.

它告诉我们，哦，我们有 foobar 行的例子。

I can attach the foobar session and I can end it.

我可以附加 foobar 会话并且可以结束它。

So we can do like " tmux new -t foobar" and this is a completely different session, that we have started.

所以我们可以像“ tmux new -t foobar”那样做，这是一个完全不同的会话，我们已经开始了。

And then we have oh, we want to copy this as notes but we could also copy this as foobar.

然后我们有哦，我们想将其复制为注释，但我们也可以将其复制为 foobar。

So here, we run, we check if the file has foobar, and if the file has foobar then it's going to have a zero code.

所以在这里，我们运行，检查文件是否有 foobar，如果文件有 foobar 那么它将有一个零代码。

Then, in the next line we're running the grep command which is just search for a substring in some file and we're searching for the string foobar in the file.

然后，在下一行中，我们运行 grep 命令，该命令只是在某个文件中搜索子字符串，并且我们在文件中搜索字符串 foobar 。

Then, what happens when we if the file did not have foobar, like there was a nonzero error code, then we print " this file doesn't have any foobar, we're going to add one" .

然后，如果文件没有 foobar，就像有一个非零错误代码，然后我们打印“此文件没有任何 foobar，我们将添加一个”，会发生什么。

" tmux ls" will tell us that we have two different sessions: the first one is named " 0" , because I didn't give it a name, and the second one is called " foobar" .

“tmux ls”会告诉我们，我们有两个不同的会话：第一个会话名为“0”，因为我没有给它命名，第二个会话名为“foobar”。