编辑/usr/local/share/applications/linphone.desktop文件既可以添加图标
➜ ~ cat /usr/local/share/applications/linphone.desktop
[Desktop Entry]
Type=Application
Name=Linphone
Comment=linphone SIP
Exec=/usr/local/linphone/Linphone-5.0.18.AppImage
Icon=/usr/local/linphone/linphone.png
Terminal=false
Categories=Utility;RemoteAccess;
Keywords=keyboard;mouse;sharing;network;share;