UNIX Shell Commands Quiz

What does the cd command do in a UNIX shell?

• Changes the directory

• Displays the current directory

• Copies a file

• Deletes a file

Which of the following is a meta character used for filename substitution?

• |

• &

• *

• #

What does the > operator do in input/output redirection?

• Appends output to a file

• Redirects input from a file

• Redirects output to a file

• Redirects output to another command

How do you combine the output of two commands into one using a pipe?

• command1 > command2

• command1 | command2

• command1

• $(...)

How do you perform arithmetic operations in Bourne Shell?

• expr

• calc

• math

• arith

What is the purpose of the if statement in Bourne Shell?

• To define a variable

• To perform arithmetic operations

• To make decisions based on conditions

• To run commands in parallel

How do you use quoting to prevent a shell from interpreting special characters?

• Use double quotes "

• Use single quotes '

• Use backticks `

• Use angle brackets

Which of the following control structures is used for looping in Bourne Shell?

• if

• while

• switch

• case

How do you use meta characters to represent zero or more characters in a filename?

• ?

• *

• []

• |

Which built-in command is used to display the current directory path?

• pwd

• ls

• cd

• echo