07-27-2010
Your third and last lines probably did work. To see what cron jobs you currently have scheduled, run the command
crontab -l
When you pipe it (with '|') to cron, you are actually writing a one line file to standard input of cron. That's not just a command, it a configuration file. The numbers and asterisks are the date and time.
But when you run it directly on the command line, you must not type the date and time. Bash was trying to execute "25" and "26" as commands.
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LEARN ABOUT DEBIAN
apticron
apticron(1) General Commands Manual apticron(1)
NAME
apticron - Generate a mail listing packages which are pending an upgrade
SYNOPSIS
apticron [--cron]
DESCRIPTION
apticron is a shell script which generates a mail with a list of all packages currently pending an upgrade, as well as summary of changes -
using apt-listchanges - to a configurable Email address.
apticron is mainly intended for automatic notification of pending security updates but can also be used in many other situations where
timely updates are necessary.
The --cron option is only meant to be used when invoked by cron in order to run no more than once a day.
FILES
/etc/apticron/apticron.conf
Configuration file, Email address to mail and profile for use with apt-listchanges are configurable.
/etc/cron.d/apticron
Cron job for executing apticron daily.
/etc/cron.daily/apticron
Fallback cron script for executing apticron (if no crond running or system down at designated time).
/var/lib/misc/apticron.cron
Time stamp file used by apticron when invoked with --cron option.
SEE ALSO
apt-get(8), apt-listchanges(1), cron(8)
AUTHOR
Apticron was initially developed by Colm MacCarthaigh <colm.maccarthaigh@heanet.ie> with contributions from Marc Sherman <msherman@projec-
tile.ca>. Since 2006 it is maintained and improved by Tiago Bortoletto Vaz <tiago@debian.org>.
apticron(1)