UNIX/Linux Fundamentals Journal

• Log into system profile via CCC username
• Log into Lab46 via Terminal→ ssh lab46 (then enter password)
• Log into IRC chat
• Screen attaching and detaching: a “screen” is essentially an active session.
• Taught about Opus and how to access and edit my Opus
• Setup alpine and lab46 inbox for email
• Read Course Syllabus and downloaded “Mage's” book for Unix

<dokuwiki>

^  Command:         ^  Description:         ^
|  ssh lab46        |  join "ssh server"    |
|  irssi            |  starts IRSSI         |
|  screen           |  starts screen        |
|  screen -ls       |  lists screens        |
|  Ctrl-a+Ctrl-d    |  detaches screen      |
|  screen -r        |  re-attaches screen   |
|  /server irc      |  join irc chat        |
|  /join lab46      |  join "irc channel"   |
|  /leave lab46     |  leave "irc channel"  |
|  /quit            |  quit IRSSI           |

</dokuwiki>

Today we covered regular expressions and practiced playing around with some.

• Regular Expressions:
  • . match any single symbol
  • * 0 or more of the previous
  • \< match start of word
  • \> match end of word
  • ^ match start of line
  • $ match end of line
  • [ ] match one of enclosed
  • [^ ] do not match any of enclosed
  • ( ) grouping
  • | logical or

10/25/13: long-ass command that is a “life-changer” and will be used repeatedly so as to memorize via brute force=

   cat winter2014-20131025.html|grep '^<th class="ddtitle'|sed 's/^<th class="ddtitle.*crn_in=.....">//g'|sed 's/<\/a><\/th>//g'|sed 's/^\(.*\) - \(.....\) - \(.*\) - \(...\)$/\2:\3-\4:\1/g'

This is a sample format for a dated entry. Please substitute the actual date for “Month Day, Year”, and duplicate the level 4 heading to make additional entries.

As an aid, feel free to use the following questions to help you generate content for your entries:

• What action or concept of significance, as related to the course, did you experience on this date?
• Why was this significant?
• What concepts are you dealing with that may not make perfect sense?
• What challenges are you facing with respect to the course?