Linux Essentials

Which of the following is an example of embedded Linux?

• Android

• Red Hat Linux

• Fedora

• Linux Mint

Which of the following is TRUE about open source software?

• Open source software is always free

• Open source software is a prominent example of open collaboration

• Open source software is more secure than closed source software

• Open source software does not have any support

Which of the following is NOT a Linux desktop environment?

• KDE

• XFCE

• Dwarf

• Gnome

The output of the program date should be saved in the variable datenow. What is the correct statement to enter into the shell to set this variable?

• set datenow='date'

• date | datenow

• datenow='date'

• date > $datenow

Which command is used to copy files from one directory to another?

• mv

• copy

• cp

• rm

What does the "rm -rf" command do in Linux?

• Remove all files from the directory and subdirectories

• Remove all the files in the current directory

• Rename all the files in the directory and subdirectories

• Rename all the files in the current directory

Which of the following commands will create an archive file, named backup.tar, containing all the files from the directory /home?

• tar -cf backup.tar /home

• tar -cf /home backup.tar

• tar -xf /home backup.tar

• tar -xf backup.tar /home

Which of the following directories is often used to store log files?

• /var

• /temp

• /dev/hdc1d2p3

• /usr

Command used to count number of character in a file is

• cut

• grep

• wc

• count

Hidden files are

• Files that cannot be opened by ordinary user for writing

• Permitted for (can be accessed) only super users

• Those whose ‘read’ bit is set to ‘h’

• Files that begin with a ‘.’