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Rewrote the crontab settings, hopefully it is more secure and more accurate.

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Storm dragon 2016-01-26 14:51:05 -05:00
parent 24e3fb36bc
commit 5c5fdc0553
1 changed files with 25 additions and 14 deletions
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35
src/talking-clock
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@ -18,34 +18,45 @@ if [ "$1" == "--cron" ] ; then
"to view your settings."
exit 1
fi
crontab -l > /tmp/cron.bak
read -p "You are about to modify talking-clock settings. Are you sure you want to do this? (Only y or Y confirms, anything else cancels) ", answer
if [[ "$answer" != "y" && "$answer" != "Y" ]] ; then
crontabFile="$(mktemp)"
crontab -l > "$crontabFile"
read -n1 -p "You are about to modify talking-clock settings. Are you sure you want to do this? (Only y or Y confirms, anything else cancels) ", answer
if [ "${answer^}" != "Y" ]; then
echo "talking-clock settings unchanged."
rm "$crontabFile"
exit 0
fi
sed -i -r '/^.*talking-clock.*$/d' /tmp/cron.bak
newCron=$(cat /tmp/cron.bak)
sed -i -r '/^.*talking-clock.*$/d' "$crontabFile"
case "$2" in
"1")
#Chime once per hour.
newCron="$newCron\n#talking-clock settings\n0 * * * * talking-clock > /dev/null"
echo "# talking-clock settings" >> "$crontabFile"
echo '0 * * * * /usr/bin/talking-clock &> /dev/null' >> "$crontabFile"
;;
"2")
#Chime twice per hour.
newCron="$newCron\n#talking-clock settings\n0,30 * * * * talking-clock > /dev/null"
echo "# talking-clock settings" >> "$crontabFile"
echo '0,30 * * * * talking-clock &> /dev/null' >> "$crontabFile"
;;
"4")
#Chime four times per hour.
newCron="$newCron\n#talking-clock settings\n0,15,30,45 * * * * talking-clock > /dev/null"
echo "# talking-clock settings" >> "$crontabFile"
echo '0,15,30,45 * * * * talking-clock &> /dev/null' >> "$crontabFile"
esac
#write new cron to temperary file.
echo -e "$newCron" > /tmp/cron.bak
#install the new cron file.
if [ -f /tmp/cron.bak ] ; then
crontab /tmp/cron.bak
if [ -f/"$crontabFile" ]; then
if crontab "$crontabFile" ; then
echo "talking-clock settings updated."
rm "$crontabFile"
exit 0
else
echo "There was an error installing the new crontab file."
rm "$crontabFile"
exit 1
fi
else
echo "Couldn't create new crontab."
exit 1
fi
exit 0
fi