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To run commands that need sudo(super-user) privilages. Run sudo
$ sudo ls /root
To check the init process (systemd or sysV) used by the system
$ sudo ls -l /sbin/init
To check default systemd target (eg. graphical.target or multi-user.target) set in the system
$ sudo systemctl get-default
To change the systemd target to multi-user.target
$ sudo systemctl set-default multi-user.target
To check what type of file is firefox.deb which is located at /root
$ sudo file /root/firefox.deb
To check what type of file is sample_script.sh which is located at /root
$ sudo file /root/sample_script.sh
You were asked to install a new third-party IDE in the system. Which directory is the recommended choice for the installation?
Third-party software is usually installed under **`/opt`**
Which directory contains the files related to the block devices that can be seen when running the lsblk command?
Block Device or Device Node files are located under **`/dev`** directory
What is the name of the vendor for the Ethernet Controller used in this system?
Use: sudo lshw and lookup the vendor for Ethernet Controller under the network section.
$ sudo lshw