NT1430 Chapter 5 Excercises

Chapter 5:

1. What commands can you use to determine who is logged in on a specific terminal? who, whoami, who am i, finger and w

3. What happens if you give the following commands when the file ‘done’ already exists?
$cp to_do done
‘done’ is overwritten with contents of ‘to_do’
$ mv to_do done
‘done’ is overwritten with contents of ‘to_do’
‘to_do’ no longer exists after the command

4. How can you find out which utilities are available on your system for editing files? Which utilities are available for editing on your system?
You can use the which. whereis, and locate utilities to search for files. The VIM
8. What is the result of giving the ‘which’ utility the name of a command that resides in a directory that is not in your search path? command not found
10. Experiment by calling the ‘file’ utility with names of files in /usr/bin. How many different types of files can you find there? file /usr/bin/* | awk –F: ‘{print $2}’ | sort –u
9 different file types

Chapter 5:

1. What commands can you use to determine who is logged in on a specific terminal? who, whoami, who am i, finger and w

3. What happens if you give the following commands when the file ‘done’ already exists?
$cp to_do done
‘done’ is overwritten with contents of ‘to_do’
$ mv to_do done
‘done’ is overwritten with contents of ‘to_do’
‘to_do’ no longer exists after the command

4. How can you find out which utilities are available on your system for editing files? Which utilities are available for editing on your system?
You can use the which. whereis, and locate utilities to search for files. The VIM
8. What is the result of giving the ‘which’ utility the name of a command that resides in a directory that is not in your search path? command not found
10. Experiment by calling the ‘file’ utility with names of files in /usr/bin. How many different types of files can you find there? file /usr/bin/* | awk –F: ‘{print $2}’ | sort –u
9 different file types