SmartGit/HG 是一款开放源代码的、跨平台的、支持 Git 和 Mercurial 的 SVN 图形客户端，可运行在Windows、Linux 和 MAC OS X 系统上。
1.安装
Ubuntu及衍生系统用户安装，打开终端，使用以下命令：
sudo add-apt-repository ppa:eugenesan/ppa
sudo apt-get update
sudo apt-get install smartgithg
卸载命令：
sudo apt-get remove smartgithg
2.配置
readme-linux.txt中有段设置
SmartGit where it can find your Java Runtime Environment. Create the file
~/.smartgit/smartgit.vmoptions and add following line (change the path)
jre=/path/to/your/jre
If you have further questions regarding the SmartGit on Linux, please ask in
our SmartGit mailing list:
java安装正常的
$ java -version
openjdk version "9-internal"
OpenJDK Runtime Environment (build 9-internal+0-2016-04-14-195246.buildd.src)
OpenJDK 64-Bit Server VM (build 9-internal+0-2016-04-14-195246.buildd.src, mixed mode)
定位java环境位置是在/usr/lib/jvm/java-9-openjdk-amd64
创建~/.smartgit/smartgit.vmoptions文件，内容：
jre=/usr/lib/jvm/java-9-openjdk-amd64
3.错误1
配置成后出现以下错误：
$ smartgit
intx MaxJavaStackTraceDepth=-1 is outside the allowed range [ 0 ... 1073741823 ]
Improperly specified VM option 'MaxJavaStackTraceDepth=-1'
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
这是smartgit版本小bug引起的。
解决：修改文件/usr/share/smartgit/bin/smartgit.sh
把
_MISC_OPTS="-Xverify:none -XX:MaxJavaStackTraceDepth=-1 -Dsun.io.useCanonCaches=false"
替换为
_MISC_OPTS="-Xverify:none -XX:MaxJavaStackTraceDepth=1000000 -Dsun.io.useCanonCaches=false"
4.错误2
修改完后运行再次报错
$ smartgit
Unsupported system classloader jdk.internal.loader.ClassLoaders$AppClassLoader@d7b1517
问题貌似是java9暂不支持smartgit，把java-9-openjdk-amd64卸载，重新装/java-8-openjdk-amd64。同时更新~/.smartgit/smartgit.vmoptions配置文件。
运行成功！
5.创建smartgit桌面启动
在~/Desktop/创建文件smartgit.desktop，内容为：
[Desktop Entry]
Name=SmartGit
Comment=Git client
Keywords=Git;Subversion;
StartupNotify=true
Terminal=false
Type=Application
Categories=Application;
Icon=/usr/local/bin/smartgit/bin/smartgit-48.png
Exec=/usr/local/bin/smartgit/bin/smartgit.sh %F
赋予smartgit.desktop可执行属性：
$ chmod a+x smartgit.desktop