Ultra-practical commands in Ubuntu

Super practical commands in Ubuntu 1. Check the methods of installed software packages in Ubuntu sudodpkg-l2.ubuntu system how to view the software installation location dpkg-L software name instance: wwx @ ubuntu :~ $ Dpkg-L mysql-server 3. List the sudo fdisk-l instance of the disk's Ubuntu hard disk partition command: 4. After the file system is mounted, it must be mounted before use. Sudomount device name folder name sudomount/dev/sda3/home if you want to automatically mount the file system when the system starts, modify the format of the/etc/fstab file sudovi/etc/fstab to add a line. 5. If the umount file system is no longer used for a file system, you can use the umount command. Sudoumount device name or sudoumount mount point 6. tool gnome-screenshot input command line: gnome-screenshot-h to view the specific operation 7, ifconfig command to view the local ip (this is the same as the ipconfig command in windonws)