function f-tutorial.3 ()
{
clear
bold
cyan
echo
echo "In Which We Start to do Useful Things."
white
echo
cat << EOU

If you have followed the tutorial sequence so far, you are possibly wondering when we start
issuing real, useful commands that actually do something...

This series of tutorials is aimed at people who might be confused and surprised by the command
line, so it is deliberately a bit slow to get going. If you are more advanced you might want to
skip forward to later tutorials.

You might find this one useful though... 

We start with a few "INX-specific" commands that call various functions.

EOU
cyan
echo "Some commands to start INX menus, and a Mutt wrapper to avoid disasters..."
echo
yellow
printf "inx      " ; white ; printf " starts the main INX menu, with a splash."
echo ; yellow
printf "menu     " ; white ; printf " starts the main INX menu."
echo ; yellow
printf "stream   " ; white ; printf " starts the internet stream radio menu."
echo ; yellow
printf "random   " ; white ; printf " starts the Shoutcast search-and-play menu."
echo ; yellow
printf "netinx   " ; white ; printf " starts the Internet and Web menu."
echo ; yellow
printf "mailinx  " ; white ; printf " starts the mail menu, unsurprisingly..."
echo ; yellow
printf "mutt     " ; white ; printf " starts mutt mail, with dire warnings if not configured."
echo ; yellow
printf "fun      " ; white ; printf " what it says on the tin, I hope."
echo ; yellow
printf "usb      " ; white ; printf " starts the usb access menu."
echo ; yellow
printf "gmail    " ; white ; printf " starts elinks at the gmail log-in page"
echo ; yellow
printf "tutorial " ; white ; printf " you can probably guess..."

printf "\n\n"
cyan
echo "Other INX commands."
white
echo
printf "Type" ; yellow ; printf " ls -a /usr/local/bin" ; white ; printf " to see the green entries"
printf "\n\n"
echo "Some of them might do something useful for you ;-). Green entries are executable. "
echo 
cyan
echo "As before, hit <space> to continue, < m > to return to the menu, < x > for a prompt."

f-tutescape
echo ; cyan
echo "Commands for GNU Screen."
echo
white
echo "These are jumping ahead a bit. You probably noticed the entry for the GNU Screen \"tour\""
echo "in the main INX menu. This refers to a very useful program that allows you to create extra"
echo "\"windows\" within a terminal. (I like to think of them as \"tabs\"). If you are already "
echo "comfortable on the command line, you might try these \"demonstrations\"."
echo 
echo " Otherwise, I recommend that you continue with this series of tutorials."
echo "If you jump ahead to using \"Screen\", try reading the introduction from its menu first."
echo
echo
yellow
printf "monitor   " ; white ; printf " a collection of monitoring applications (htop,iptraf.iftop)"
echo ; yellow
printf "filemanage" ; white ; printf " three file managers in \"tabs\"- quite superfluous :-)"
echo ; yellow
printf "mailscreen" ; white ; printf " Gmail in Elinks, and Mutt"
echo ; yellow
printf "music	  " ; white ; printf " The MOC music player, Magnatunes, Shoutcast, and a mixer."
echo ; yellow
printf "office	  " ; white ; printf " A calendar (calcurse), editor (nano), calculator, spreadsheet."
echo
echo
cyan
echo "Hit <space> to continue, as always in these tutorials..."
f-tutescape
echo ; cyan
echo "Commands for the lazy..."
echo
white
echo "Well, not really. You will remember that paths to directories and files can be tab-completed."
echo "You might have discovered that commands can also be tab-completed."
echo
echo "For example, if you type \"mail\" and then hit tab twice, you will see something like"
echo
unbold
echo "tty4:inx@inx:~$ mail"
echo "mailinx         mail-lock       mailscreen      mail-touchlock  mail-unlock"
bold
echo 
echo "You choose the one you want, when there are several matches. Tab completion cleverly"
echo "stops complaining as soon as you type enough letters to avoid ambiguity."
echo
echo "On the subject of annoying beep complaints - you can turn beeps off with"
yellow
echo
echo "setterm -blength 0"
echo
white
echo "( Zero, of course, not capital \"O\".)"
echo
echo "If you want your beep to always be a concert-pitch-tuning \"A\" you can type"
echo
yellow
echo "setterm -bfreq 440"
white
echo
echo "The note can hardly be described as \"musical\", though ;-)"

f-tutescape
echo
cyan
echo "The text! The text!"
echo
white
echo "I had a tutor once who was fond of using that exclamation..."
echo
echo "Here we are in a Linux/UNIX context though - and text is still one of the fundamentals."
echo 
echo "Even if we do no coding or scripting, we all need an editor - if only for Email."
echo "Most Email applications these days, of course, include an editor in the application."
echo
echo "The UNIX philosophy, though, has always been to have small applications that do one job,"
echo "and do it well. The idea is that you can string applications together in creative ways,"
echo "rather than lumping all the functionality together in enormous complex bundles."
echo
echo "This is great when you know what the applications are, how to use them, and how to"
echo "string them together - but rather daunting when you don't."
echo
echo "So, let's start with a simple editor: nano. It is the default editor in INX, and in"
echo "Debian and Ubuntu."
echo
echo "Of course, if you prefer a different editor, that can be easily done, as you will later"
echo "discover. In nano, the first key combinations to know are CTRL+O to save, and CTRL+X"
echo "to exit. If you look at the bottom of the nano screen you will see helpful reminders."
echo "In each case, ^ means \"CTRL\" - so saving (WriteOut) is shown as ^O , and Exit as ^X"
echo
echo "I will start nano for you - type a bit, then hit those combinations to save and exit."
echo "Name your file anything you like. This is just a familiarising exercise."
echo
cyan
echo "Hit <space> to continue, x for a prompt, m to return to the main INX menu."
f-tutescape
nano 
clear
echo
bold
echo "Of course, the command to start nano is... "
echo
yellow
echo "nano"
echo
white
echo "How surprising !"
echo
echo "Suggestion: get a command prompt and play around with nano a bit. Later you might want"
echo "to learn a more powerful editor, but nano is fine for most text editing tasks."
echo
echo "In the next tutorial we will introduce some useful searching commands, and a thing known"
echo "as a \"pipe\". This pipe relates directly to the little lecture about stringing "
echo "applications together."
echo
cyan
echo "That's it for tutorial 3. The usual key escapes apply - you should know them by now :-)"


f-tutescape
f-tutorial
}