28thOS

Which of the following commands allows for moving one

level up in Linux directory tree?

• cd -

• cd ..

• cd /

• cd .

when creating soft link ,if the original file has been removed it won`t be useful any more ?

• True

• False

what is the Linux command segment used to append data to the "s.txt" file ?

• echo "Hey Ubuntu "

• echo "Hey Ubuntu " > s.txt

• ls >> s.txt

• echo "Hello " > s.txt

What is the name of a Linux command used for count the number of lines in a file ?

• wc a.txt

• count -l a.txt

• wc -l a.txt

• wc -w a.txt

Which Command Shows Permissions in Files

• ls -l

• ls -a

• ls -h

• ls -r

What single character can be used to refer to the active user's home directory?

• ^

• $

• ~

• there is none

What is the command to list hidden files & directory?

• ls -l

• ls -a

• ls

• None of these

Which of the following commands allows for moving one level up in Linux directory tree?

• cd -

• cd /

• cd --

• cd ~

Which permission amongst the following allows only groups to read and execute the file and denies all user as well as others to read, write and execute ?

• rwxrwx---

• rw-r-x--x

• ---r-x---

• r-x-w-rwx

How to make a file executable the right way?

• chmod 777

• chmod a-x

• chmod +x

• chmod 400