fi
}
+# sleep for a random interval of time (default 30min)
+# (some code taken from cron-apt, thanks)
+random_sleep()
+{
+ RandomSleep=1800
+ eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep)
+ if [ $RandomSleep -eq 0 ]; then
+ return
+ fi
+ if [ -z "$RANDOM" ] ; then
+ # A fix for shells that do not have this bash feature.
+ RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null | cksum | cut -c"1-5")
+ fi
+ TIME=$(($RANDOM % $RandomSleep))
+ sleep $TIME
+}
+
+# main
+
if ! which apt-config >/dev/null; then
exit 0
fi
eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
AutocleanInterval=$DownloadUpgradeableInterval
eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
-
UnattendedUpgradeInterval=0
eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
+# check if we actually have to do anything
+if [ $UpdateInterval -eq 0 ] &&
+ [ $DownloadUpgradeableInterval -eq 0 ] &&
+ [ $UnattendedUpgradeInterval -eq 0 ] &&
+ [ $AutocleanInterval -eq 0 ]; then
+ exit 0
+fi
# laptop check, on_ac_power returns:
# 0 (true) System is on mains power
fi
fi
-# check if we can lock the cache and if the cache is clean
+# sleep random amount of time to avoid hitting the
+# mirrors at the same time
+random_sleep
+
+# check if we can access the cache
if ! apt-get check -q -q 2>/dev/null; then
- echo "$0: could not lock the APT cache"
- exit 1
+ # wait random amount of time before retrying
+ random_sleep
+ # check again
+ if ! apt-get check -q -q 2>/dev/null; then
+ echo "$0: could not lock the APT cache while performing daily cron job. "
+ echo "Is another package manager working?"
+ exit 1
+ fi
fi
+# set the proxy based on the admin users gconf settings
+admin_user=$(getent group admin|cut -d: -f4|cut -d, -f1)
+if [ -n "$admin_user" ] && [ -x /usr/bin/sudo ] && [ -z "$http_proxy" ] && [ -x /usr/bin/gconftool ]; then
+ use=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/use_http_proxy 2>/dev/null)
+ host=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/host 2>/dev/null)
+ port=$(sudo -u "$admin_user" gconftool --get /system/http_proxy/port 2>/dev/null)
+ if [ "$use" = "true" ] && [ -n "$host" ] && [ -n "$port" ]; then
+ export http_proxy="http://$host:$port/"
+ fi
+fi
UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
if check_stamp $UPDATE_STAMP $UpdateInterval; then
+ # check for a new archive signing key (against the master keyring)
+ apt-key net-update
+ # now run the update
if apt-get -qq update -o APT::Update::Auth-Failure::="cp /usr/share/apt/apt-auth-failure.note /var/lib/update-notifier/user.d/" 2>/dev/null; then
# Could possible test access to '/var/run/dbus/system_bus_socket' has well,
# but I'm not sure how stable the internal pipe location is defined as
if which dbus-send >/dev/null; then
dbus-send --system / app.apt.dbus.updated boolean:true 2>/dev/null || true
fi
+ # now run apt-xapian-index if it is installed to ensure the index
+ # is up-to-date
+ if [ -x /usr/sbin/update-apt-xapian-index ]; then
+ ionice -c3 update-apt-xapian-index -q
+ fi
update_stamp $UPDATE_STAMP
fi
fi