/usr/share/doc/debconf-doc/examples/tutorial-back is in debconf-doc 1.5.42ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | #!/bin/sh -e
# Source debconf library.
. /usr/share/debconf/confmodule
db_version 2.0
# This conf script is capable of backing up
db_capb backup
STATE=1
while [ "$STATE" != 0 -a "$STATE" != 3 ]; do
case "$STATE" in
1)
# Do you like debian?
db_input medium foo/like_debian || true
;;
2)
# Check to see if they like debian.
db_get foo/like_debian
if [ "$RET" = "false" ]; then
# Poor misguided one..
db_input high foo/why_debian_is_great || true
fi
;;
esac
if db_go; then
STATE=$(($STATE + 1))
else
STATE=$(($STATE - 1))
fi
done
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