#
# This file understands the following apt configuration variables:
# Values here are the default.
-# Create /etc/apt/apt.conf.d/02periodic file to set your preference.
+# Create /etc/apt/apt.conf.d/10periodic file to set your preference.
#
# Dir "/";
# - RootDir for all configuration files
#
-# Dir::Cache "var/apt/cache/";
+# Dir::Cache "var/cache/apt/";
# - Set apt package cache directory
#
# Dir::Cache::Archives "archives/";
# APT::Archives::MinAge "2"; (old, deprecated)
# APT::Periodic::MinAge "2"; (new)
# - Set minimum age of a package file. If a file is younger it
-# will not be deleted (0=disable). Usefull to prevent races
+# will not be deleted (0=disable). Useful to prevent races
# and to keep backups of the packages for emergency.
#
# APT::Archives::MaxSize "0"; (old, deprecated)
# APT::Periodic::MaxSize "0"; (new)
# - Set maximum size of the cache in MB (0=disable). If the cache
# is bigger, cached package files are deleted until the size
-# requirement is met (the biggest packages will be deleted
+# requirement is met (the oldest packages will be deleted
# first).
#
# APT::Periodic::Update-Package-Lists "0";
# 1: progress report (actually any string)
# 2: + command outputs (remove -qq, remove 2>/dev/null, add -d)
# 3: + trace on
+#
+# APT::Periodic::RandomSleep "1800";
+# - The apt cron job will delay its execution by a random
+# time span between zero and 'APT::Periodic::RandomSleep'
+# seconds.
+# This is done because otherwise everyone would access the
+# mirror servers at the same time and put them collectively
+# under very high strain.
+# You can set this to '0' if you are using a local mirror and
+# do not care about the load spikes.
+# Note that sleeping in the apt job will be delaying the
+# execution of all subsequent cron.daily jobs.
+#
check_stamp()
{
stamp=$(date --date=$(date -r $stamp_file --iso-8601) +%s 2>/dev/null)
if [ "$?" != "0" ]; then
# Due to some timezones returning 'invalid date' for midnight on
- # certain dates (eg America/Sao_Paulo), if date returns with error
+ # certain dates (e.g. America/Sao_Paulo), if date returns with error
# remove the stamp file and return 0. See coreutils bug:
# http://lists.gnu.org/archive/html/bug-coreutils/2007-09/msg00176.html
rm -f "$stamp_file"
now=$(date --date=$(date --iso-8601) +%s 2>/dev/null)
if [ "$?" != "0" ]; then
# As above, due to some timezones returning 'invalid date' for midnight
- # on certain dates (eg America/Sao_Paulo), if date returns with error
+ # on certain dates (e.g. America/Sao_Paulo), if date returns with error
# return 0.
return 0
fi
delta=$(($now-$stamp))
- # intervall is in days, convert to sec.
+ # interval is in days, convert to sec.
interval=$(($interval*60*60*24))
debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta (sec)"
delta=$(($now-$ctime))
fi
if [ $delta -le $MinAge ]; then
- debug_echo "skip remove by archive size: $file, delta=$delta < $MinAgeSec"
+ debug_echo "skip remove by archive size: $file, delta=$delta < $MinAge"
break
else
# delete oldest file
- debug_echo "remove by archive size: $file, delta=$delta >= $MinAgeSec (sec), size=$size >= $MaxSize"
+ debug_echo "remove by archive size: $file, delta=$delta >= $MinAge (sec), size=$size >= $MaxSize"
rm -f $file
fi
fi
fi
if [ -z "$RANDOM" ] ; then
# A fix for shells that do not have this bash feature.
- RANDOM=$(dd if=/dev/urandom count=1 2> /dev/null | cksum | cut -c"1-5")
+ RANDOM=$(( $(dd if=/dev/urandom bs=2 count=1 2> /dev/null | cksum | cut -d' ' -f1) % 32767 ))
fi
TIME=$(($RANDOM % $RandomSleep))
debug_echo "sleeping for $TIME seconds"
# ------------------------ main ----------------------------
-# Backup the 7 last versions of APT's extended_states file
-# shameless copy from dpkg cron
-if cd /var/backups ; then
- if ! cmp -s apt.extended_states.0 /var/lib/apt/extended_states; then
- cp -p /var/lib/apt/extended_states apt.extended_states
- savelog -c 7 apt.extended_states >/dev/null
+if test -r /var/lib/apt/extended_states; then
+ # Backup the 7 last versions of APT's extended_states file
+ # shameless copy from dpkg cron
+ if cd /var/backups ; then
+ if ! cmp -s apt.extended_states.0 /var/lib/apt/extended_states; then
+ cp -p /var/lib/apt/extended_states apt.extended_states
+ savelog -c 7 apt.extended_states >/dev/null
+ fi
fi
fi
-# check apt-config exstance
+# check apt-config existence
if ! which apt-config >/dev/null ; then
exit 0
fi
check_power || exit 0
# check if we can lock the cache and if the cache is clean
-if which apt-get >/dev/null && ! eval apt-get check -f $XAPTOPT $XSTDERR ; then
+if which apt-get >/dev/null && ! eval apt-get check $XAPTOPT $XSTDERR ; then
debug_echo "error encountered in cron job with \"apt-get check\"."
exit 0
fi
now=$(date +%s)
# Support old Archive for compatibility.
-# Document only Periodic for all controling parameters of this script.
+# Document only Periodic for all controlling parameters of this script.
UpdateInterval=0
eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
projects / apt.git / blobdiff