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Part 2
Entries
Entry 1: October 5, 2012
lab46:~/badname/exercise$ cat one* lab46:~/badname/exercise$ cat just* lab46:~/badname/exercise$ cat compress* lab46:~/badname/exercise$ cat change\ my\\\ name.file lab46:~/badname/exercise$ cat \*\*\*\ watch\ out\!\ \*\*\* lab46:~/badname/exercise$ cat \?\?\?\ can\ you\ delete\ me\ \?\?\?.abc lab46:~/badname/exercise$ cat '#pico28903#' lab46:~/badname/exercise$ cat '$USER VALUE$' lab46:~/badname/exercise$ cat '`ls` * HI! *'
lab46:~/badname/challenge$ rm '- challenge round -' rm: invalid option -- ' ' Try `rm ./'- challenge round -'' to remove the file `- challenge round -'. Try `rm --help' for more information. lab46:~/badname/challenge$ rm ./'- challenge round -' rm: remove regular file `./- challenge round -'? y lab46:~/badname/challenge$ dir lab46:~/badname/challenge$
Thanks to Dustin Sherburne for all the help.
Entry 2: October 26, 2012
cat spring2013-20121026.html | grep '^<TH CLASS="ddtitle"' | sed 's/^.*crn_in=.....">//g' | sed 's/<\/A><\/TH>$//g' | sed 's/^\(.*\) - \([0-9][0-9][0-9][0-9][0-9]\) - \(.*\) - \([0-9]*\)$/ \3-\4:\2:\1/g' | sort | less
Entry 3: October 30, 2012
Was going to type stuff from yesterday (10/31) doing stuff for the opus but no school.
Entry 4: October 31, 2012
HAPPY HALLOWEEN! Finished the keyword 2. Finished experiment.
cat spring2013-20121026.html | egrep '^(<TH CLASS="ddtitle"|<TD CLASS="dddefault">)' | sed 's/^.*crn_in=.....">//g' | sed 's/<\/A><\/TH>$//g' | sed 's/^\(.*\) - \([0-9][0-9][0-9][0-9][0-9]\) - \(.*\) - \([0-9]*\)$/ \3-\4:\2:\1/g' | sed 's/^.*="dddefault">//g' | sed 's/<\/TD>$//g' | sed 's/^<ABBR title = "To Be Announced">TBA<\/ABBR>//g' | sed 's/^ //g' | sed 's/(<ABBR title= "Primary">.........//g' | sed 's/<A HREF=.*//g' | less
Keywords
unix Keyword 2
PATH environment variable
Definition
The $PATH variable specifies a list of one or more directory names separated by colons.
The /bin, /usr, and /local directories are typically included in most users' $PATH settings. The current directory is sometimes included, allowing programs in the current directory to be executed. Superuser (root) accounts as a rule are not include in $PATH, however, in order to prevent the accidental execution of scripts in the current directory.
When a command name is specified by the user or an exec call is made from a program, the system searches through $PATH, examining each directory from left to right in the list, looking for a filename that matches the command name. Once found, the program is executed as a child process of the command shell or program that issued the command.
References
unix Keyword 2 Phase 2
quotes
Definition
A helpful tool that allows you to print characters just as you input them
References
List any sites, books, or sources utilized when researching information on this topic. (Remove any filler text).
- Reference 1
- Reference 2
- Reference 3
Demonstration
lab46:~$ dir -l | grep "d" | wc -l 19 lab46:~$
Experiment 2
Question
Can you give grep to letters/words?
Resources
Hypothesis
It will work and both letters/words.
Experiment
Type it in a command line.
Data
drwxr-xr-x 2 kpryslop lab46 62 Oct 26 15:08 Desktop drwxr-xr-x 2 kpryslop lab46 6 Jan 25 2011 Documents lrwxrwxrwx 1 kpryslop lab46 18 Jan 18 2011 Maildir -> /var/mail/kpryslop drwxr-xr-x 2 kpryslop lab46 6 Jan 25 2011 Music drwxr-xr-x 2 kpryslop lab46 6 Jan 25 2011 Pictures drwxr-xr-x 2 kpryslop lab46 6 Jan 25 2011 Public drwxr-xr-x 2 kpryslop lab46 6 Jan 25 2011 Templates drwxr-xr-x 2 kpryslop lab46 6 Jan 25 2011 Videos drwxr-x--x 3 kpryslop lab46 80 Sep 23 11:56 archives drwxr-x--- 5 kpryslop lab46 51 Sep 17 2010 badname -rw-r----- 1 kpryslop lab46 971 Oct 5 14:54 badname.tgz drwxr-xr-x 2 kpryslop lab46 6 Jan 27 2011 bin drwxr-xr-x 2 kpryslop lab46 42 Sep 21 16:27 closet lrwxrwxrwx 1 kpryslop lab46 28 Jan 27 2011 data -> /usr/local/etc/data/kpryslop drwxr-x--- 2 kpryslop lab46 48 Oct 24 15:06 ls\ -l drwx---r-x 5 kpryslop lab46 45 Oct 5 08:53 public_html drwx------ 7 kpryslop lab46 101 Sep 26 09:25 src drwx------ 3 kpryslop lab46 43 Aug 31 15:58 src.bak drwxr-xr-x 2 kpryslop lab46 21 Sep 21 11:51 the\ answer.txt
Analysis
grep does allow for two or more letters/words.
Conclusions
This is useful to know how to do.
