6 # This file understands the following apt configuration variables:
8 # "APT::Periodic::Update-Package-Lists=1"
9 # - Do "apt-get update" automatically every n-days (0=disable)
11 # "APT::Periodic::Download-Upgradeable-Packages=0",
12 # - Do "apt-get upgrade --download-only" every n-days (0=disable)
14 # "APT::Periodic::AutocleanInterval"
15 # - Do "apt-get autoclean" every n-days (0=disable)
17 # "APT::Archives::MaxAge",
18 # - Set maximum allowed age of a cache package file. If a cache
19 # package file is older it is deleted (0=disable)
21 # "APT::Archives::MaxSize",
22 # - Set maximum size of the cache in MB (0=disable). If the cache
23 # is bigger, cached package files are deleted until the size
24 # requirement is met (the biggest packages will be deleted
27 # "APT::Archives::MinAge"
28 # - Set minimum age of a package file. If a file is younger it
29 # will not be deleted (0=disable). Usefull to prevent races
30 # and to keep backups of the packages for emergency.
38 if [ $interval -eq 0 ]; then
42 if [ ! -f $stamp ]; then
46 # compare midnight today to midnight the day the stamp was updated
47 stamp
=$(date --date=$(date -r $stamp --iso-8601) +%s
)
48 now
=$(date --date=$(date --iso-8601) +%s
)
49 delta
=$(($now-$stamp))
51 # intervall is in days,
52 interval
=$(($interval*60*60*24))
54 #echo "interval=$interval, now=$now, stamp=$stamp, delta=$delta"
56 if [ $delta -ge $interval ]; then
72 # we check here if autoclean was enough sizewise
73 check_size_constraints
()
78 CacheDir
="var/cache/apt"
79 CacheArchive
="archives/"
80 eval $(apt-config shell MaxAge APT::Archives::MaxAge)
81 eval $(apt-config shell MaxSize APT::Archives::MaxSize)
82 eval $(apt-config shell CacheDir Dir::Cache)
83 eval $(apt-config shell CacheArchive Dir::Cache::archives)
86 if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
87 echo "empty Dir::Cache or Dir::Cache::archives, exiting"
90 Cache
="/"$CacheDir$CacheArchive
93 if [ ! $MaxAge -eq 0 ]; then
94 find $Cache -name "*.deb" -mtime +$MaxAge -print0 | xargs -r -0 rm -f
98 if [ ! $MaxSize -eq 0 ]; then
99 # reverse-sort by mtime
100 for file in $(ls -rt $Cache/*.deb); do
103 # check if the cache is small enough
104 if [ $size -lt $MaxSize ]; then
113 check_size_constraints
117 # we check here if autoclean was enough sizewise
118 check_size_constraints
()
124 CacheDir
="var/cache/apt"
125 CacheArchive
="archives/"
126 eval $(apt-config shell MaxAge APT::Archives::MaxAge)
127 eval $(apt-config shell MinAge APT::Archives::MinAge)
128 eval $(apt-config shell MaxSize APT::Archives::MaxSize)
129 eval $(apt-config shell Dir Dir)
130 eval $(apt-config shell CacheDir Dir::Cache)
131 eval $(apt-config shell CacheArchive Dir::Cache::archives)
134 if [ -z "$CacheDir" -o -z "$CacheArchive" ]; then
135 echo "empty Dir::Cache or Dir::Cache::archives, exiting"
139 Cache
="${Dir%/}/${CacheDir%/}/${CacheArchive%/}/"
142 if [ ! $MaxAge -eq 0 ] && [ ! $MinAge -eq 0 ]; then
143 find $Cache -name "*.deb" -mtime +$MaxAge -and -not -mtime -$MinAge -print0 | xargs -r -0 rm -f
144 elif [ ! $MaxAge -eq 0 ]; then
145 find $Cache -name "*.deb" -mtime +$MaxAge -print0 | xargs -r -0 rm -f
149 if [ ! $MaxSize -eq 0 ]; then
151 MaxSize
=$(($MaxSize*1024))
154 now
=$(date --date=$(date --iso-8601) +%s
)
155 MinAge
=$(($MinAge*24*60*60))
157 # reverse-sort by mtime
158 for file in $(ls -rt $Cache/*.deb 2>/dev/null); do
161 # check if the cache is small enough
162 if [ $size -lt $MaxSize ]; then
166 # check for MinAge of the file
167 if [ ! $MinAge -eq 0 ]; then
168 mtime
=$(date --date=$(date -r $file --iso-8601) +%s
)
169 delta
=$(($now-$mtime))
170 #echo "$file ($delta), $MinAge"
171 if [ $delta -le $MinAge ]; then
172 #echo "Skiping $file (delta=$delta)"
185 DownloadUpgradeableInterval
=0
186 eval $(apt-config shell UpdateInterval APT::Periodic::Update-Package-Lists DownloadUpgradeableInterval APT::Periodic::Download-Upgradeable-Packages)
187 AutocleanInterval
=$DownloadUpgradeableInterval
188 eval $(apt-config shell AutocleanInterval APT::Periodic::Autoclean)
190 # laptop check, on_ac_power returns:
191 # 0 (true) System is on mains power
192 # 1 (false) System is not on mains power
193 # 255 (false) Power status could not be determined
194 # Desktop systems always return 255 it seems
195 if which on_ac_power
>/dev
/null
; then
197 if [ $?
-eq 1 ]; then
202 UPDATE_STAMP
=/var
/lib
/apt
/periodic
/update
-stamp
203 if check_stamp
$UPDATE_STAMP $UpdateInterval; then
204 if apt
-get -qq update
2>/dev
/null
; then
205 if which dbus
-send >/dev
/null
; then
206 dbus
-send --system / app.apt.dbus.updated boolean
:true
208 update_stamp
$UPDATE_STAMP
212 DOWNLOAD_UPGRADEABLE_STAMP
=/var
/lib
/apt
/periodic
/download
-upgradeable-stamp
213 if check_stamp
$DOWNLOAD_UPGRADEABLE_STAMP $DownloadUpgradeableInterval; then
214 apt
-get -qq -d dist
-upgrade 2>/dev
/null
215 update_stamp
$DOWNLOAD_UPGRADEABLE_STAMP
218 AUTOCLEAN_STAMP
=/var
/lib
/apt
/periodic
/autoclean
-stamp
219 if check_stamp
$AUTOCLEAN_STAMP $AutocleanInterval; then
220 apt
-get -qq autoclean
222 update_stamp
$AUTOCLEAN_STAMP
226 check_size_constraints