没安装git

使用git-bash代替CMD即可

set PATH=%PATH%;%PROGRAMFILES(x86)%\Git\bin;%PROGRAMFILES(x86)%\Git\cmd也可以，还更直观

我知道了，因为npm中install的git和所需要的不是同一个，大家需要去 http://msysgit.github.io/下载Git-1.9.4-preview20140815.exe安装包，安装后才可以。如果安装后仍然不行，需要重新设定Path环境变量，将安装后的bin目录加到Path中，然后在执行bower install bootstrap就可以了。

D:\Mooc>npm uninstall git

unbuild git@0.1.5

D:\Mooc>bower install bootstrap

bower ENOGIT        git is not installed or not in the PATH

(下载/安装 Git-1.9.4-preview20140815.exe )

D:\Mooc>PATH=%PATH%;C:\Program Files (x86)\Git\bin;

D:\Mooc>bower install bootstrap

bower not-cached    git://github.com/twbs/bootstrap.git#*

bower resolve       git://github.com/twbs/bootstrap.git#*

bower download      https://github.com/twbs/bootstrap/archive/v3.2.0.tar.gz

bower extract       bootstrap#* archive.tar.gz

bower resolved      git://github.com/twbs/bootstrap.git#3.2.0

bower not-cached    git://github.com/jquery/jquery.git#>= 1.9.0

bower resolve       git://github.com/jquery/jquery.git#>= 1.9.0

bower download      https://github.com/jquery/jquery/archive/2.1.1.tar.gz

bower extract       jquery#>= 1.9.0 archive.tar.gz

bower resolved      git://github.com/jquery/jquery.git#2.1.1

bower install       bootstrap#3.2.0

bower install       jquery#2.1.1

bootstrap#3.2.0 bower_components\bootstrap

└── jquery#2.1.1

jquery#2.1.1 bower_components\jquery

D:\Mooc>

而且我手动安装了git还是报同样的错误，请指教啊

D:\Mooc>npm install git

git@0.1.5 node_modules\git

└── mime@1.2.9

D:\Mooc>bower install bootstrap

bower ENOGIT        git is not installed or not in the PATH

D:\Mooc>