Bug#478904: apt: Updated cron script
Package: apt
Version: 0.7.11
Followup-For: Bug #478904
Here is my updated script. Apparently, the apt cron script I provided
last night was broken. It seems it is working. I will test this now.
Also
/etc/apt/apt.conf.d/02backup exactly should be
---
APT::Periodic::BackupArchiveInterval "1";
---
as seen below to work.
-- Package-specific info:
-- apt-config dump --
APT "";
APT::Architecture "amd64";
APT::Build-Essential "";
APT::Build-Essential:: "build-essential";
APT::Install-Recommends "1";
APT::Install-Suggests "0";
APT::Acquire "";
APT::Acquire::Translation "environment";
APT::Authentication "";
APT::Authentication::TrustCDROM "true";
APT::NeverAutoRemove "";
APT::NeverAutoRemove:: "^linux-image.*";
APT::NeverAutoRemove:: "^linux-restricted-modules.*";
APT::Periodic "";
APT::Periodic::BackupArchiveInterval "1";
Dir "/";
Dir::State "var/lib/apt/";
Dir::State::lists "lists/";
Dir::State::cdroms "cdroms.list";
Dir::State::userstatus "status.user";
Dir::State::status "/var/lib/dpkg/status";
Dir::Cache "var/cache/apt/";
Dir::Cache::archives "archives/";
Dir::Cache::srcpkgcache "srcpkgcache.bin";
Dir::Cache::pkgcache "pkgcache.bin";
Dir::Etc "etc/apt/";
Dir::Etc::sourcelist "sources.list";
Dir::Etc::sourceparts "sources.list.d";
Dir::Etc::vendorlist "vendors.list";
Dir::Etc::vendorparts "vendors.list.d";
Dir::Etc::main "apt.conf";
Dir::Etc::parts "apt.conf.d";
Dir::Etc::preferences "preferences";
Dir::Bin "";
Dir::Bin::methods "/usr/lib/apt/methods";
Dir::Bin::dpkg "/usr/bin/dpkg";
Dir::Log "var/log/apt";
Dir::Log::Terminal "term.log";
DPkg "";
DPkg::Pre-Install-Pkgs "";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/apt-listbugs apt || exit 10";
DPkg::Pre-Install-Pkgs:: "/usr/bin/apt-listchanges --apt || test $? -ne 10";
DPkg::Pre-Install-Pkgs:: "/usr/sbin/dpkg-preconfigure --apt || true";
DPkg::Tools "";
DPkg::Tools::Options "";
DPkg::Tools::Options::/usr/sbin/apt-listbugs "";
DPkg::Tools::Options::/usr/sbin/apt-listbugs::Version "2";
DPkg::Tools::Options::/usr/bin/apt-listchanges "";
DPkg::Tools::Options::/usr/bin/apt-listchanges::Version "2";
DPkg::Post-Invoke "";
DPkg::Post-Invoke:: "if [ -x /usr/bin/debsums ]; then /usr/bin/debsums --generate=nocheck -sp /var/cache/apt/archives; fi";
Unattended-Upgrade "";
Unattended-Upgrade::Allowed-Origins "";
Unattended-Upgrade::Allowed-Origins:: "Debian stable";
-- /etc/apt/preferences --
-- /etc/apt/sources.list --
deb http://cdn.debian.or.jp/debian/ sid main contrib non-free
deb-src http://cdn.debian.or.jp/debian/ sid main contrib non-free
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.24-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages apt depends on:
ii debian-archive-keyring 2008.04.16+nmu1 GnuPG archive keys of the Debian a
ii libc6 2.7-10 GNU C Library: Shared libraries
ii libgcc1 1:4.3.0-3 GCC support library
ii libstdc++6 4.3.0-3 The GNU Standard C++ Library v3
apt recommends no packages.
-- no debconf information
#!/bin/sh
#set -x
#set -e
#
# This file understands the following apt configuration variables:
#
# "Dir='/'"
# - RootDir for all configuration files
#
# "Dir::Cache='var/apt/cache/'",
# - Set apt package cache directory
#
# "Dir::CacheArchive='archives/'",
# - Set package archive directory
#
# "APT::Periodic::BackupArchiveInterval=0",
# - Backup after n-days if archive contents changed.(0=disable)
#
# "Dir::BackupArchive=backup",
# - Set periodic package backup directory
#
# "APT::Archives::MaxAge=0",
# - Set maximum allowed age of a cache package file. If a cache
# package file is older it is deleted (0=disable)
#
# "APT::Archives::MinAge=2"
# - Set minimum age of a package file. If a file is younger it
# will not be deleted (0=disable). Usefull to prevent races
# and to keep backups of the packages for emergency.
#
# "APT::Archives::MaxSize=0",
# - 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
# first).
#
# "APT::Periodic::Update-Package-Lists=1"
# - Do "apt-get update" automatically every n-days (0=disable)
#
# "APT::Periodic::Download-Upgradeable-Packages=0",
# - Do "apt-get upgrade --download-only" every n-days (0=disable)
#
# "APT::Periodic::Unattended-Upgrade"
# - Run the "unattended-upgrade" security upgrade script
# every n-days (0=disabled)
# Requires the package "unattended-upgrades" and will write
# a log in /var/log/unattended-upgrades
#
# "APT::Periodic::AutocleanInterval"
# - Do "apt-get autoclean" every n-days (0=disable)
#
check_stamp()
{
stamp="$1"
interval="$2"
now="$3"
if [ $interval -eq 0 ]; then
debug_echo "check_stamp: interval=0."
# treat as no time has passed
return 1
fi
if [ ! -f $stamp ]; then
update_stamp $stamp
debug_echo "check_stamp: missing time stamp file: $stamp."
# treat as enough time has passed
return 0
fi
# compare midnight today to midnight the day the stamp was updated
stamp=$(date -r $stamp '+%s')
delta=$(($now-$stamp))
# intervall is in days,
interval=$(($interval*60*60*24))
debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp, delta=$delta"
if [ $delta -ge $interval ]; then
return 0
fi
return 1
}
update_stamp()
{
stamp="$1"
touch $stamp
}
debug_echo()
{
# Display message if $DEBUG is nonzero string
if [ -n "$DEBUG" ]; then
echo $1
fi
}
# check apt-config exstance
if ! which apt-config >/dev/null; then
exit 0
fi
# laptop check, on_ac_power returns:
# 0 (true) System is on mains power
# 1 (false) System is not on mains power
# 255 (false) Power status could not be determined
# Desktop systems always return 255 it seems
if which on_ac_power >/dev/null; then
on_ac_power
if [ $? -eq 1 ]; then
exit 0
fi
fi
# check if we can lock the cache and if the cache is clean
if which apt-get >/dev/null && ! apt-get check -qq 2>/dev/null; then
echo "$0: error encountered in cron job with \"apt-get check -qq\"."
apt-get check -qq || true
exit 1
fi
# Current time in seconds since 1970-01-01 00:00:00 UTC
now=$(date +%s)
# Set default values and normalize
Dir="/"
eval $(apt-config shell Dir Dir)
Dir=${Dir%/}
CacheDir="var/cache/apt/"
eval $(apt-config shell CacheDir Dir::Cache)
CacheDir=${CacheDir%/}
if [ -z "$CacheDir" ]; then
echo "practically empty Dir::Cache=, exiting"
exit
fi
CacheArchive="archives/"
eval $(apt-config shell CacheArchive Dir::Cache::archives)
CacheArchive=${CacheArchive%/}
if [ -z "$CacheArchive" ]; then
echo "practically empty Dir::Cache::archives=, exiting"
exit
fi
BackupArchiveInterval=0
eval $(apt-config shell BackupArchiveInterval APT::Periodic::BackupArchiveInterval)
BackupArchive="backup"
eval $(apt-config shell BackupArchive Dir::BackupArchive)
BackupArchive=${BackupArchive%/}
if [ -z "$BackupArchive" ]; then
echo "empty Dir::Cache::backup, exiting"
exit
fi
MaxAge=0
eval $(apt-config shell MaxAge APT::Archives::MaxAge)
MinAge=2
eval $(apt-config shell MinAge APT::Archives::MinAge)
MaxSize=0
eval $(apt-config shell MaxSize APT::Archives::MaxSize)
UpdateInterval=0
eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists)
DownloadUpgradeableInterval=0
eval $(apt-config shell DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
UnattendedUpgradeInterval=0
eval $(apt-config shell UnattendedUpgradeInterval APT::Periodic::Unattended-Upgrade)
AutocleanInterval=0
eval $(apt-config shell AutocleanInterval APT::Periodic::AutocleanInterval)
Cache="${Dir}/${CacheDir}/${CacheArchive}/"
Back="${Dir}/${CacheDir}/${BackupArchive}/"
BackX="${Back}${CacheArchive}/"
Back0="${Back}0/"
Back1="${Back}1/"
Back2="${Back}2/"
# backup after n-days if archive contents changed.
# (This uses hardlink to save disk space)
BACKUP_ARCHIVE_STAMP=/var/lib/apt/periodic/backup-archive-stamp
if check_stamp $BACKUP_ARCHIVE_STAMP $BackupArchiveInterval $now ; then
if [ $({(cd $Cache 2>/dev/null; find . -name "*.deb"); (cd $Back0 2>/dev/null;find . -name "*.deb") ;}| sort|uniq -u|wc -l) -ne 0 ]; then
mkdir -p $Back
if [ -e $Back1 ]; then rm -rf $Back2 ; mv -f $Back1 $Back2 ; fi
if [ -e $Back0 ]; then rm -rf $Back1 ; mv -f $Back0 $Back1 ; fi
rm -rf $Back0 ; cp -la $Cache $Back ; mv -f $BackX $Back0
update_stamp $BACKUP_ARCHIVE_STAMP
debug_echo "Made backup with hardlinks."
else
debug_echo "Skip backup since same contents."
fi
else
debug_echo "Skip backup since too new."
fi
# package archive contnts removal by package age
if [ $MaxAge -ne 0 ] && [ $MinAge -ne 0 ]; then
find $Cache -name "*.deb" \( -mtime +$MaxAge -and -ctime +$MaxAge \) -and -not \( -mtime -$MinAge -or -ctime -$MinAge \) -print0 | xargs -r -0 rm -f
debug_echo "Aged: ctime <$MaxAge and mtime <$MaxAge and ctime>$MinAge and mtime>$MinAge"
elif [ $MaxAge -ne 0 ]; then
find $Cache -name "*.deb" -ctime +$MaxAge -and -mtime +$MaxAge -print0 | xargs -r -0 rm -f
debug_echo "Aged: ctime <$MaxAge and mtime <$MaxAge only"
else
debug_echo "Skip aging since MaxAge is 0"
fi
# package archive contnts removal down to $MaxSize
if [ $MaxSize -ne 0 ]; then
MinAgeSec=$(($MinAge*24*60*60))
# reverse-sort by mtime
for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
du=$(du -m -s $Cache)
size=${du%%/*}
# check if the cache is small enough
if [ $size -lt $MaxSize ]; then
debug_echo "End remove by archive size: size=$size < $MaxSize"
break
fi
# check for MinAge in second of the file
if [ $MinAgeSec -ne 0 ]; then
# check both ctime and mtime
mtime=$(stat -c %Y $file)
ctime=$(stat -c %Z $file)
if [ $mtime -gt $ctime ]; then
delta=$(($now-$mtime))
else
delta=$(($now-$ctime))
fi
if [ $delta -le $MinAgeSec ]; then
debug_echo "Skip remove by archive size: $file (delta=$delta < $MinAgeSec)"
else
# delete oldest file
debug_echo "Remove by archive size: $file (delta=$delta >= $MinAgeSec, size=$size >= $MaxSize)"
rm -f $file
fi
fi
done
fi
# update package lists
UPDATE_STAMP=/var/lib/apt/periodic/update-stamp
if which apt-get >/dev/null && check_stamp $UPDATE_STAMP $UpdateInterval $now; then
if apt-get -qq update 2>/dev/null; then
debug_echo "download updated metadata (success)."
if which dbus-send >/dev/null && dbus-send --system / app.apt.dbus.updated boolean:true ; then
debug_echo "Send dbus signal(success)"
else
debug_echo "Send dbus signal(error)"
fi
update_stamp $UPDATE_STAMP
# download all upgradeable packages if it is requested
DOWNLOAD_UPGRADEABLE_STAMP=/var/lib/apt/periodic/download-upgradeable-stamp
if which apt-get >/dev/null && check_stamp $DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval $now; then
if apt-get -qq -d dist-upgrade 2>/dev/null; then
update_stamp $DOWNLOAD_UPGRADEABLE_STAMP
debug_echo "download upgradable (success)."
# auto upgrade all upgradeable packages
UPGRADE_STAMP=/var/lib/apt/periodic/upgrade-stamp
if which unattended-upgrade >/dev/null && check_stamp $UPGRADE_STAMP $UnattendedUpgradeInterval $now; then
if unattended-upgrade; then
update_stamp $UPGRADE_STAMP
debug_echo "unattended-upgrade (success)."
else
debug_echo "unattended-upgrade (error)."
fi
else
debug_echo "unattended-upgrade (not run)."
fi
else
debug_echo "download upgradable (error)."
fi
else
debug_echo "download upgradable (not run)."
fi
else
debug_echo "download updated metadata (error)."
fi
else
debug_echo "download updated metadata (not run)."
fi
# autoclean package archive
AUTOCLEAN_STAMP=/var/lib/apt/periodic/autoclean-stamp
if which apt-get >/dev/null && check_stamp $AUTOCLEAN_STAMP $AutocleanInterval $now; then
if apt-get -qq autoclean; then
debug_echo "autoclean (success)."
update_stamp $AUTOCLEAN_STAMP
else
debug_echo "autoclean (error)."
fi
else
debug_echo "autoclean (not run)."
fi
#
# vim: set sts=4 ai :
#
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