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|
#!/bin/sh
if [ "$1" = "install" ]
then
hook="/etc/pacman.d/hooks/upds.hook"
if [ "$(id -u)" -ne 0 ]
then
>&2 printf 'Please run as root.\n'; exit 1
fi
if [ -f "$hook" ]
then
>&2 printf 'Hook already installed.\n'; exit 1
fi
# Install the hook
cat <<EOF > "$hook"
# Hook for keeping available updates in sync after upgrade
# relies on 'upds'
[Trigger]
Operation = Upgrade
Type = Package
Target = *
[Action]
Description = Sync upds
When = PostTransaction
Exec = /usr/bin/sh -c '/usr/bin/kill -s USR1 "\$(/usr/bin/pgrep upds | /usr/bin/head -n 1)"'
EOF
>&2 printf 'Installed.\n'
exit
fi
count_updates() { checkupdates | wc -l > ~/.cache/updates; }
# Periodically count updates in background
(
while true
do
count_updates
sleep 60m
done
) &
# update on USR1 signal
trap count_updates USR1
# wait for signal
while true
do sleep 1s
done
|
