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=					Weeks 1-3  				     =
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Commands:
    apropos  (the word "apropos" can be defined as "very appropriate to a particular situation").
    man
    cd, cd -, and cd with an arbitrary path
    ls along with it's -a, -R, and -l options
    cat
    less
    export 
    alias
    pwd
    echo and echo -n
    mkdir and it's option -p
    rmdir
    rm and it's options -r and -f
    find and it's options -type and -name
    cp and it's option -r
    mv and it's options -f, -n, and -i
    touch
    wget
    tar
    scp


Concepts:
    Understand the difference between a relative and absolute path in the linux filesystem
    Understand the meanings of /, ., and .. in terms of paths
    Understand the concept of a "working directory"
    Understand the information displayed in the default prompt on Ubuntu, for example:
	   cjohnso0@bb136-11:~/linux$	
	   This prompt says I have a shell running on Host ______ as User ______ and my working directory is _________?
    Know that ssh allows for running a shell on a remote machine. Be able to explain, in words, what a command like this is saying:
	   $ ssh cjohnso0@gc297-01.mines.edu


Editor:
    What editor keystroke deletes from the cursor position to the end of the line? Not the whole line!
    What editor keystroke jumps the cursor to the beginning of a line? To the end of a line?
    What editor keystroke(s) let you copy, delete, and paste a select region of lines in a file?
    What editor keystroke(s) let's you save the current file buffer to disk?
    What keystrokes exit your editor with saving a file?
    What keystrokes exit your editor without saving the file?
    What keystrokes allow you to select a region of text (multiple lines) for copying or deleting?

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=					Weeks 4-5					     =
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Commands:
    wc and its options -w and -l
    file
    read
    bash and options -x and -e
    du
    df
    stat


Concepts:
    Know the input and output redirection operators <, >, and >>
    Know that /dev/null is a special file to which you redirect "garbage" output
    Know the special meanings of the characters/wildcards ?, *, [set], and [!set]
    Know the special meanings of the $ and ~ characters
    Understand quoting rules with single quotes, double quotes, and no quotes. What does the shell do in each scenario when it sees special characters (like * or $)?
    Be able to trace through simple shell scripts like the shell-dessert.sh explained in class


Editor:
    What keystroke or keystrokes auto-complete words or variable names?

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=					Weeks 6-8					     =
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Commands:
    ps 
    top
    kill and option -9


Concepts:
    Understand the special meaning of the $? variable. What does it mean if $? is 0 or nonzero?
    Understand the difference in Ctrl-C and Ctrl-D
    Know what Ctrl-L and Ctrl-Z do
    Understand how to use the while-do-done structure in a bash script
    Be able to explain the terminating condition of a while loop in terms of $?
    Know how to reference command line arguments in bash scripts (e.g., what is $1, $2, ..., $@?)
    Know the special meaning of the $$ variable
    Know the test command and the importance of its exit status.
    Be able to read the man page for test to find the options you need
    Know that [] is analagous to test
    Understand how to use the if-then-fi structure in a bash script
    Know that the false, true, and yes commands exist

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=					Weeks 9-10					     =
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Commands:
    grep and its options -l, -v, -e
    head and its -n option; note that head -n 3 is the same as head -3
    tail and its -n option; note that tail -n 3 is the same as tail -3
    sort and its options -n, -k, and -t
    uniq (note the connection to sort)
    tr and its option -d
    cut and its options -d, -c and -f
    tee and its option -a


Concepts:
    Understand the Bash control structure: case-in-esac; a multiway control structure similar to C/C++ switch statement.
    Understand the Bash control structure: for-do-done; an iterative looping structure not like the C/C++ arithmetic loop.
    How are wildcards special to the processing of for-do-done loops?
    In a case-in-esac statement, how do you create a "catch-all" default matching pattern?
    Know how to write a case-in-esac pattern matching "switch" statement.
    Know how to write and trace a for-do-done pattern matching loop.
    What special character sequence signifies the end of a pattern-match block in case-in-esac?
    When multiple patterns match a case-in-esac predicate, which one is evaluated?
    Understand how if and while structures in Bash depend on the exit status of command(s)
    Understand how the case and for structures in Bash depend on patterns

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=					Weeks 11-14					     =
==============================================================================================
Commands:
    sed and its options -e, -i, and -n
    Know the s(ubstitute), p(rint), and d(elete) transformations available with sed
    Know how to specify a search-and-replace operation in sed (s/Harry/Sally/)
    How does the g modifier affect the result of s/Harry/Sally/g?
    Know how to specify line number scope in sed (5p or 1,3s/Harry/Sally/)
    What does the d sed command do, as in sed 5,8d
    chmod and its option -R
    chown and its option -R
    Know that the sudo command exists and what it allows you to do (provided you are allowed to run the command)


Concepts:
    UNDERSTAND HOW PIPELINES IN *NIX WORK!!!!! For example, explain what each of the following would do:
    	apropos word | grep "count"
    	cat file.txt | tr '\n' ' ' | wc -l
    	sort < file.txt | uniq | head -3
    	sort < file.txt | uniq | head -3 | cut -c 1
    	sort < file.txt | uniq | head -3 | cut -c 1 | tr 'ABC' '123'

    How do you assign the output of a command or pipeline as the value of a variable?
    What are the exit codes of grep and sed --- how are they dependent on the pattern argument and their input file?
    Know the "3x3" nature of Unix permissions --- what do the mnemonics r, w, and x mean?
    What can you do to a file or directory with permissions 000?
    How are permissions related to the octal (base 8) number system?
    What advantage do the symbolic specifications such as -w and +x have in chmod?
    Know how to tell what permissions the user, group, and others have for a particular file