1,234
edits
Changes
no edit summary
{{Admon/caution|DO NOT USE THIS VERSION OF THE LAB. This page will no longer be updated.|'''New version here:''' https://seneca-ictoer.github.io/ULI101/A-Tutorials/tutorial5<br />'''Andrew's students please go here:''' http://wiki.littlesvr.ca/wiki/OPS145_Lab_5}}
=REDIRECTION: STANDARD INPUT / STANDARD OUTPUT / STANDARD ERROR=
<br>
|- valign="top" style="padding-left:15px;"
|colspan="2" |'''Slides:'''<ul><li>Week 5 Lecture 1 Notes:<br> [https://githubwiki.comcdot.senecacollege.ca/ULI101uli101/slides/raw/main/ULI101-5.1.pdf PDF] | [https://githubwiki.comcdot.senecacollege.ca/ULI101uli101/slides/raw/main/ULI101-5.1.pptx PPTX]</li><li>Week 5 Lecture 2 Notes:<br> [https://githubwiki.comcdot.senecacollege.ca/ULI101uli101/slides/raw/main/ULI101-5.2.pdf PDF] | [https://githubwiki.cdot.comsenecacollege.ca/ULI101uli101/slides/raw/main/ULI101-5.2.pptx PPTX] <br></li></ul>
=INVESTIGATION 1: BASICS OF REDIRECTION=
<span style="color:red;">'''ATTENTION''': Effective '''May 9, 2022''' - this This online tutorial will be required to be completed by '''Friday in week 6 by midnight'''<br>to obtain a grade of '''2%''' towards this course</span><br><br>
In this investigation, you will learn how to redirect '''standard input''', '''standard output''' and '''standard error''' when issuing Unix / Linux commands.
# Press <span style="color:blue;font-weight:bold;font-family:courier;">ctrl-d</span> to exit the command.<br><br>
# Issue the '''cat''' command to view the contents of the file: '''output3.txt'''<br><br>
# Issue the following Linux command: <span style="color:blue;font-weight:bold;font-family:courier;">cp ~murrayjason.saulcarman/uli101/cars .</span><br><br>
# Issue the '''cat''' command to view the contents of the '''cars''' file.<br><br>
# Issue the following Linux command: <span style="color:blue;font-weight:bold;font-family:courier;">cut -c1-10 cars</span><br><br>What did this command do?<br><br>
simulate a quiz:
https://githubwiki.com/ULI101/labscdot.senecacollege.ca/rawuli101/mainfiles/uli101_week5_practice.docx
Your instructor may take-up these questions during class. It is up to the student to attend classes in order to obtain the answers to the following questions. Your instructor will NOT provide these answers in any other form (eg. e-mail, etc).
'''Review Questions:'''
# Write a single Linux command to provide a detailed listing of all files in the '''/binetc''' directory, sending the output to a file called listing.txt in the “'''projects'''” directory (append output to existing file and use a relative pathname)
# Write a single Linux command to redirect the stderr from the command:<br>'''cat a.txt b.txt c.txt''' to a file called '''error.txt''' contained in the “'''assignments'''” directory. (overwrite previous file’s contents and use only relative pathnames)
# Write a single Linux command: '''cat ~/a.txt ~/b.txt ~/c.txt''' and redirect stdout to a file called “good.txt” to the “tests” directory and stderr to a file called “'''bad.txt'''” to the “'''tests'''” directory. (overwrite previous contents for both files and use only relative-to-home pathnames).
