OS quiz1

Which command is used to display the contents of a file in Unix?

• cat 

• ls 

• pwd 

• rm

Which command is used to compress files?

• gzip 

• bzip2 

• zip 

• tar

Which command is used to sort the lines of data in a file in reverse order?

• sort 

• uniq 

• tac 

• head

Which command is used to display the beginning of a file in Unix?

• cat 

• head

•  tail 

• more

Which symbol is used with the tail command to print the file from the selected line?

• < 

• >

•  |

•   >>

Which command is used to delete all files in a directory?

• rm

•  rm -r 

• rmdir

•  df

Which command is used to change the current directory?

• cd 

• pwd 

• ls 

• rm

Which command is used to display the current working directory?

• pwd 

• ls

•  cd 

• rm

   Which command is used to create a new directory?

• rm
• mkdir
• touch
• cd

  Which command is used to delete a directory?

• dirdelete
• rmdir (Windows) or rm -r (Unix/Linux)
• remove
• delete