| | 1 | #!/bin/sh |
| | 2 | |
| | 3 | set -e |
| | 4 | |
| | 5 | # Systemd systems use a systemd timer unit which is preferable to |
| | 6 | # run. We want to randomize the apt update and unattended-upgrade |
| | 7 | # runs as much as possible to avoid hitting the mirrors all at the |
| | 8 | # same time. The systemd time is better at this than the fixed |
| | 9 | # cron.daily time |
| | 10 | if [ -d /run/systemd/system ]; then |
| | 11 | exit 0 |
| | 12 | fi |
| | 13 | |
| | 14 | # sleep for a random interval of time (default 30min) |
| | 15 | # (some code taken from cron-apt, thanks) |
| | 16 | random_sleep() |
| | 17 | { |
| | 18 | RandomSleep=1800 |
| | 19 | eval $(apt-config shell RandomSleep APT::Periodic::RandomSleep) |
| | 20 | if [ $RandomSleep -eq 0 ]; then |
| | 21 | return |
| | 22 | fi |
| | 23 | if [ -z "$RANDOM" ] ; then |
| | 24 | # A fix for shells that do not have this bash feature. |
| | 25 | RANDOM=$(( $(dd if=/dev/urandom bs=2 count=1 2> /dev/null | cksum | cut -d' ' -f1) % 32767 )) |
| | 26 | fi |
| | 27 | TIME=$(($RANDOM % $RandomSleep)) |
| | 28 | sleep $TIME |
| | 29 | } |
| | 30 | |
| | 31 | # run daily job |
| | 32 | random_sleep |
| | 33 | exec /usr/lib/apt/apt.systemd.daily |
projects / apt.git / blame_incremental