Project $5-1$

ESTIMATED TIME: $15$ minutes

OBJECTIVE: Create device files.

DESCRIPTION: In this hands$-$on project, you view and create device files.

$1$

Boot your Fedora Linux virtual machine. After your Linux system has loaded, switch to a command$-$line terminal $($tty$5)$ by pressing Ctrl$+$Alt$+$F$5.$ Log in to the terminal using the user name of root and the password of LINUXrocks!.

$2$

At the command prompt, type ls $$l $/$dev$/$tty$6$ and press Enter. What device does $/$dev$/$tty$6$ represent? Is this file a block or character device file? Why? What are the major and minor numbers for this file?

$3$

At the command prompt, type rm $$f $/$dev$/$tty$6$ and press Enter. Next, type ls $$l $/$dev$/$tty$6$ at the command prompt and press Enter. Was the file removed successfully?

$4$

Switch to tty$6$ by pressing Ctrl$+$Alt$+$F$6$ and attempt to log in to the terminal using the user name of root and the password of LINUXrocks!. Were you successful?

$5$

Switch back to tty$5$ by pressing Ctrl$+$Alt$+$F$5,$ type the command mknod $/$dev$/$tty$6$ c $46$ at the command prompt, and press Enter. What did this command do$?$ Next, type ls $$l $/$dev$/$tty$6$ at the command prompt and press Enter. Was the file re$-$created successfully?

$6$

Switch back to tty$6$ by pressing Ctrl$+$Alt$+$F$6$ and log in to the terminal using the user name of root and the password of LINUXrocks!. Why were you successful?

$7$

At the command prompt, type ls $$l $/$dev$/$tty$?$ and press Enter. What is similar about all of these files? Is the major number different for each file? Is the minor number different for each file? Why?

$8$

At the command prompt, type find $/$dev and press Enter to list all of the filenames under the $/$dev directory. Are there many files? Next, type du $$hs $/$dev at the command prompt and press Enter. How large in KB are all files within the $/$dev directory? Why?

$9$

At the command prompt, type less $/$proc$/$devices and press Enter. Note the devices and major numbers present on your system. What character devices have a major number of $4?$ How does this compare with what you observed in Step $2?$ Press q to exit the less utility when finished.

$10$

Type exit and press Enter to log out of your shell.