Commonly used command uboot in uboot and ubuntu: mmc erase boot 0 1 1 Delete emmc's boot partition ext2format mmc format emmc's first partition fdisk-c 0 300 14000 200 partition emmc ubuntu: bzip2-d file name .tar.bz2 tar xvf file name .tar tar zxf. tgz unrar file name .rar unzip. zip gzip-d file name .tar.gz find-name *** | xargs rm-rf deletes all files or folders named *** in the current directory. Grep "***" *-nR searches for all files in the current directory that contain *** strings. Sudo apt-get install imagemagick sudo apt-get install graphicsmagick-imagemagick-compat // the above two toolkit are used to create the android boot logo ibus-setup for ubuntu input method to set sudo adb kill-server; sudo adb start-server // This command is used to run the command: When the adb shell is used, when the prompt does not have permission, execute