010-160 Linux Filesystem & File Management 5

Question 1

Which command shows the current working directory?

Accepted Answer

pwd

Answer

`pwd` (print working directory) outputs the absolute path of the current directory.

Question 2

What does `rm -rf /tmp/testdir` do?

Accepted Answer

Recursively and forcefully removes /tmp/testdir and all its contents

Answer

`rm -r` removes directories recursively and `-f` suppresses prompts and ignores nonexistent files.

Question 3

What type of file does `ls -l` show when the first character of the permissions field is 'l'?

Accepted Answer

Symbolic link

Answer

In `ls -l` output, 'l' as the first character of the permissions string indicates a symbolic (soft) link.

Question 4

Which command can be used to display the last 20 lines of a file?

Accepted Answer

tail -20 file

Answer

`tail -20 file` (or `tail -n 20 file`) displays the last 20 lines of the specified file.

Question 5

What is the purpose of the `/var` directory in the Linux filesystem hierarchy?

Accepted Answer

Contains variable data that changes during system operation, like logs and spool files

Answer

/var holds variable data that grows and changes during normal system operation, including log files, mail spools, and databases.

(010-160) LPI Linux Essentials Practice Test