Linux

Hi guys~! Today I got some issue on Ubuntu16.04. Although the Ubuntu is linux base, in ubuntu, we can't use root to login. Or u have to spend time to figure it out. So, the issue I met is that I tried to link serial port by some IDE, such as Qt, but the ttyUSB or ttyS0 ports are set as 550 permission. To use the port correctly u have to use root or sudo, but u can't run the Qt as root directly like Windows, in which u just right clicked and run as Administrator. Things u have to do is : cd /urpath/Qt/Tolls/QtCreator/bin sudo ./qtcreator So... the things I gonna teach u is ... how to write a custom command ~~ LOL, Sorry for tell a long story before the tutorial ahh. First of all, write the command u wanna use in txt or .sh whatever u want command : cd /urpath/Qt/Tolls/QtCreator/bin sudo ./qtcreator A common way to handle this is to use /bin directory, mkdir ~/bin put ur script in the folder mv yourfile ~/bin make sure u can execute it chmo...