Linux Foundation LFCS Exam Success: Linux Foundation Certified System Administrator Complete Study and Preparation Tips

Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.)

Which port is the default server port for the HTTPS protocol? (Specify the port number using digits.)

With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled? (Specify only the environment variable without any additional commands or values.)

When the command echo $ outputs 1, which of the following statements is true?

How can the normal output of a command be written to a file while discarding the error output?

Which type of filesystem is created by mkfs when it is executed with the block device name only and without any additional parameters?

Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)

Which variable defines the directories in which a Bash shell searches for executable commands?

Which of the following is a legacy program provided by CUPS for sending files to the printer queues on the command line?

After running the command umount /mnt, the following error message is displayed:

umount: /mnt: device is busy.

What is a common reason for this message?