ubuntu安装deb文件

install the deb-package, e.g. using the Terminal command
$ sudo apt install <path-to-smartgit-deb-file>    例如：sudo apt install  ./sougou.deb
on newer Linux versions or using
$ sudo dpkg -i <path-to-smartgit-deb-file>
$ sudo apt-get install -f
on older ones sudo