man diff与已安装的diff版本不对应。

Question

执行man diff说明如下：

NAME
       diff - compare files line by line

SYNOPSIS
       diff [OPTION]... FILES

DESCRIPTION
       Compare files line by line.

       -i  --ignore-case
              Ignore case differences in file contents.

[...]
       -q  --brief
              Output only whether files differ.
[...]

但是当我使用-q选项时，它会在fatal: invalid diff option/value: -q中失败

为什么diff命令的执行人员与安装的版本不相对应？

怎么修呢？

是否有一个brew包具有带有-q选项的diff命令的版本？(brew coreutils和binutils没有diff命令)

OSX 10.11.5

用你的问题更新

$ which diff
/usr/bin/diff

$ diff --version
usage: git diff --no-index <path> <path>

$ diff -v
usage: git diff --no-index <path> <path>

$ command diff --version
diff (GNU diffutils) 2.8.1

我用brew和https://github.com/donnemartin/dev-setup

如果我禁用由开发安装安装的.bash_profile，那么which diff仍然返回相同的路径，但diff -q工作。

Answer 1

你是否有机会使用类似奇佐之类的东西？有些框架将(很糟糕)定义它们自己的函数，以取代终端默认的函数。

在这种情况下，尝试运行command diff -q ...，看看这是否解决了问题。

编辑：正如@MarkPlotnick所指出的，发展-设置是另一个覆盖默认diff命令并使用git diff的框架：

# Use Git’s colored diff when available
hash git &>/dev/null;
if [ $? -eq 0 ]; then
    function diff() {
        git diff --no-index --color-words "$@";
    }
fi;

参考：https://github.com/donnemartin/dev-setup/blob/master/.functions