什么是Windows命令外壳相当于bash中的'真'的命令？ [英] What's the Windows command shell equivalent of bash's `true` command?

问题描述

我已经写了vim的插件，弹到运行外部命令。我运行的命令的两个差异和的grep 这可每个出口有一个非零退出code在正常运行。

I have written a vim plugin which shells out to run external commands. Two of the commands I run are diff and grep which can each exit with a non-zero exit code during "normal" operation.

（差异，退出code退出1当它发现差异和的grep ，退出$ C退出$ C 1，当它没有找到匹配。）

(diff exits with exit code 1 when it finds differences and grep exits with exit code 1 when it doesn't find matches.)

有关我的Vimscript的目的，我需要从这些命令返回0作为退出code。到目前为止，我构建这样的命令：

For the purposes of my Vimscript I need to return an exit code of 0 from these commands. So far I'm constructing the commands like this:

diff a b || true

和

grep foo bar || true

这对我的作品在OS X上，它显然适用于一些Windows用户。然而，当我上通过VirtualBox的OS X上运行的Windows 7，利用git的安装程序安装的bash中，我得到的错误消息：真不被识别为一个内部或外部命令，可操作的程序或批处理文件。

This works for me on OS X and it apparently works for some Windows users. However when I run Windows 7 on OS X via Virtualbox, using the bash installed by the git installer, I get the error message: 'true' is not recognized as an internal or external command, operable program or batch file.

什么是正确的成功，无操作命令在Windows上使用？

What is the correct successful-no-op command to use on Windows?

推荐答案

真正大致相当于（退出0）（括号创建以状态0退出，而不是退出当前的shell，一个子shell。

true is roughly equivalent to (exit 0) (the parentheses create a subshell that exits with status 0, instead of exiting your current shell.

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