Users and Permissions

Question 1

chmod

Answer 1

change permissions

Syntax: chmod [who this applies to (u,g,o)][+ or -][which permission (r,w,x)] filename.txt

Absolute permissions (numbers)

• 4 = read
• 2 = write
• 1 = execute

Question 2

How do you change the output from the terminal screen?

Answer 2

• Use > to redirect the output to a file
  ex. (echo “Hello world” > afile) will create a file with the contents of “Hello world”
• Use >> to append to a file
  ex. (echo “Hello world” >> afile) will append the contents to the file afile and it will now contain two Hello worlds

Question 3

top

Answer 3

display and update sorted information about processes