写环境变量

在环境变量PATH后面添加上git安装的bin目录路径即可

linux : 

echo "export PATH=$PATH:/usr/local/git/bin" >> /etc/bashrc

source /etc/bashrc

export PATH=/opt/STM/STLinux-2.3/devkit/sh4/bin:$PATH

content of /etc/bashrc

export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/go/bin:/root/bin:/usr/local/git/bin