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Tutorial9: Regular Expressions

54 bytes added, 08:30, 8 July 2020
INVESTIGATION 3: OTHER COMMANDS THAT USE REGULAR EXPRESSIONS
#Let's use regular expressions with the '''more''' command.<br>Issue the following linux command to view the contents of the '''textfile1.txt''' (downloaded in a previous section):<br><span style="color:blue;font-weight:bold;font-family:courier;">more textfile1.txt</span><br><br>
#We want to search for a pattern '''uli101''' within this text file.<br>Type the following regular expression and press ENTER:<br><span style="color:blue;font-weight:bold;font-family:courier;">/uli101</span><br><br>What did you notice?<br><br>
#Search for the next occurrence of the pattern '''uli101''' by issuingre-typing the following regular expression and pressing ENTER:<br><span style="color:blue;font-weight:bold;font-family:courier;">/uli101</span><br><br>you should now see the second occurrence of this pattern within the text file.<br><br>
# Press the letter <span style="color:blue;font-weight:bold;font-family:courier;">q</span> to exit the '''more''' command.<br><br>
#Issue the following linux command:<br><span style="color:blue;font-weight:bold;font-family:courier;">wget <nowiki>https://ict.senecacollege.ca/~murray.saul/uli101/textfile1.txt</nowiki></span><br><br>
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