Crontab, BASH and Audacious as a Wakeup Alarm

This one is actually very simple so let's dive into it right now. The first thing we need to do is create a crontab entry. Take notice that your system must allow this in order for crontab to execute your stuff.

$ crontab -e

# Edit this file to introduce tasks to be run by cron.
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
# For more information see the manual pages of crontab(5) and cron(8)

# m h  dom mon dow   command
0 9     *   *  1-5      /home/vlatko/bin/

This will simply setup script to be run every morning at 9:00. So what's the magic in the It's pretty awesome if you ask me:


# If audacious is already started nothing will happen
amixer set Master 0 > /dev/null
amixer set PCM 205 > /dev/null
audtool --playback-play

for i in {1..10}
        amixer set Master $i > /dev/null
        sleep 5

Clearly, you need to have audacious and alsa mixer installed to have this working. But the net effect is that you will wake up to sounds of your favorite music.

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