Framework for shell script wizard.

wizard.sh

#!/bin/bash

# Interactive wizard to walk the user through a process.
# Tracks steps completed; allows user to exit at any point and pick back up there.

function step1 () {
    read -p "step 1 ok, $1? " ok
}

function step2 () {
    read -p "step 2 ok, $1? " ok
}

function step3 () {
    read -p "step 3 ok, $1? " ok
}

function step4 () {
    read -p "step 4 ok, $1? " ok
}

function step5 () {
    read -p "step 5 ok, $1? " ok
}

function step6 () {
    read -p "step 6 ok, $1? " ok
}

function step7 () {
    read -p "step 7 ok, $1? " ok
}

base=${0%.sh}
if [ ! -e $base.cfg ] ; then
    # initialize the file with all the steps
    echo -e "step1\nstep2\nstep3\nstep4\nstep5\nstep6\nstep7" > $base.cfg
fi

for x in `grep -v ^# $base.cfg` ; do
    $x foo
    # mark the step complete with a hash.
    sed -i "s/$x/# $x/;" $base.cfg
done

Example session:
$ ./wizard.sh
step 1 ok, foo?
step 2 ok, foo?
step 3 ok, foo?
[ctrl-c]
$ ./wizard.sh
step 3 ok, foo?
step 4 ok, foo?
step 5 ok, foo?
step 6 ok, foo?
[ctrl-c]
$ ./wizard.sh
step 6 ok, foo?
step 7 ok, foo?
[ctrl-c]
$ ./wizard.sh
$