Course: ITNW6088 UNIX for Webmasters
Instructor: Ashley Rosilier unix@iteachu.com
Dates: Jan. 31 - Mar. 11

Project 3 - Redirecting I/O

Preparation

• Complete lesson 4

Objectives

• Understand the use of filters and redirection

Project Details

Task to be completed	What you need to submit via email
Exercise in Chapter 5 (page 96)	copy of telnet session text
Exercise in the Additional Notes for lesson 4. (Note that this exercise is shell-specific and may not work on all UNIX servers. It will work on the ACC server)	copy of telnet session text
Answer the following questions (these are not related to the above exercises): Explain the difference between the following two commands: grep "hello" * ls * | grep "hello" What command(s) would display an alphabetical list of all users currently on the system? (Hint: you will need to use a pipe and a filter) What command(s) would find the number of files in the working directory that contain lines with the word "balloon"? (Hint: the command should produce number, not a list of files. You need to be searching the file contents, not the names of the files.) How could you use redirection to elminate the "permission denied" messages on the screen when using the find command? Go back and repeat question 1 of project 2 using this method.	answers

Project Submission

In order to submit your project, you will need to be able to copy the command results from your telnet session. You can either copy the entire session or just the relevent parts. Email the text from your telnet session, along with any other information requested, to unix@iteachu.com by the deadline date in the schedule.