Intellij IDEA 启动时，弹出Can't start Git问题解决办法

现象说明

今天打开idea，突然在右下方弹出提示框如下：

Can't start Git: /usr/bin/git
Probably the path to Git executable is not valid.

问题出现的原因

为了找到问题出现的原因，首先需要打开终端确认一下是否可以执行git命令：

sudo /usr/bin/git

出现如下结果：

xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun

但是如果执行如下命令，出现的结果却不一样：

cd /usr/bin/
git

执行的结果如下：

usage: git [--version] [--help] [-C <path>] [-c name=value]
[--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
[-p | --paginate | --no-pager] [--no-replace-objects] [--bare]
[--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
<command> [<args>]
These are common Git commands used in various situations:
start a working area (see also: git help tutorial)
clone
Clone a repository into a new directory
init
Create an empty Git repository or reinitialize an existing one
work on the current change (see also: git help everyday)
add
Add file contents to the index
mv
Move or rename a file, a directory, or a symlink
reset
Reset current HEAD to the specified state
rm
Remove files from the working tree and from the index
examine the history and state (see also: git help revisions)
bisect
Use binary search to find the commit that introduced a bug
grep
Print lines matching a pattern
log
Show commit logs
show
Show various types of objects
status
Show the working tree status
grow, mark and tweak your common history
branch
List, create, or delete branches
checkout
Switch branches or restore working tree files
commit
Record changes to the repository
diff
Show changes between commits, commit and working tree, etc
merge
Join two or more development histories together
rebase
Reapply commits on top of another base tip
tag
Create, list, delete or verify a tag object signed with GPG
collaborate (see also: git help workflows)
fetch
Download objects and refs from another repository
pull
Fetch from and integrate with another repository or a local branch
push
Update remote refs along with associated objects
'git help -a' and 'git help -g' list available subcommands and some
concept guides. See 'git help <command>' or 'git help <concept>'
to read about a specific subcommand or concept.

以上结果证明在目录内执行git命令是没有问题的, 可能是由于xcode问题造成的。

解决方案

可在终端中执行如下命令：

xcode-select --install

系统弹出xcode插件下载的界面，大概2分钟安装完毕。

至此，问题已经得到解决。