Changes

# Issue the follwoing command to check that you correctly issued<br>those ''Linux pipeline commands'': <br><span style="color:blue;font-weight:bold;font-family:courier;">bash /home/murray.saul/scripts/week9-check-2</span><br><br>If you encounter errors, then view the feedback to make corrections, and then re-run the checking script.<br>If you receive a congratulation message that there are no errors, then proceed with this tutorial.<br><br>You can also use extended regular expression symbols for '''grouping'''.<br>For example, you can search for repetitions of GROUPS of characters (like a word)<br>as opposed to just a single character or a GROUP of numbers as opposed to a single digit.<br><br>

# Issue the following linux pipeline command to download another data file called '''words.dat''':<br><span style="color:blue;font-weight:bold;font-family:courier;">wget <nowiki>https://ict.senecacollege.ca/~murray.saul/uli101/words.dat</nowiki></span><br><br>

# Issue the following linux pipeline command to display two or more occurrences of the word "the":<br><span style="color:blue;font-weight:bold;font-family:courier;">egrep -i "(the){2,}" words.dat | tee word-search1.txt more</span><br><br>'''NOTE:''' You should NOT see any output due to the fact that a <u>space</u> should be included at the end of the word "'''the'''".<br>Usually words are separated by spaces; therefore, there were no matches since there were not occurrences<br>of "thethe" as opposed to "'''the the'''" (i.e. no space after repetition of the pattern).<br><br>

# Reissue the previous pipeline command including a space in brackets:<br><span style="color:blue;font-weight:bold;font-family:courier;">egrep -i "(the ){2,}" words.dat | tee word-search2.txt</span><br><br>The "|" (or) symbol can be used within the grouping symbols to allow matching of additional groups of characters.<br>Again, it is important to follow the character groupings with the space character<br><br>