fi
}
-check_power(){
- # laptop check, on_ac_power returns:
- # 0 (true) System is on main power
- # 1 (false) System is not on main power
- # 255 (false) Power status could not be determined
- # Desktop systems always return 255 it seems
- if which on_ac_power >/dev/null 2>&1; then
- on_ac_power
- POWER=$?
- if [ $POWER -eq 1 ]; then
- debug_echo "exit: system NOT on main power"
- return 1
- elif [ $POWER -ne 0 ]; then
- debug_echo "power status ($POWER) undetermined, continuing"
- fi
- debug_echo "system is on main power."
- fi
- return 0
-}
-
# ------------------------ main ----------------------------
if test -r /var/lib/apt/extended_states; then
set -x
fi
-check_power || exit 0
-
# check if we can lock the cache and if the cache is clean
if which apt-get >/dev/null 2>&1 && ! eval apt-get check $XAPTOPT $XSTDERR ; then
debug_echo "error encountered in cron job with \"apt-get check\"."
# deal with BackupArchiveInterval
do_cache_backup $BackupArchiveInterval
-# ensure we don't do this on battery
-check_power || exit 0
-
# include default system language so that "apt-get update" will
# fetch the right translated package descriptions
if [ -r /etc/default/locale ]; then