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#!/bin/bash
arch=$(uname -m)
maxMirrorForDownload=4
pacmanCahceDir="$(pacman-conf CacheDir)"
if [[ $UID -ne 0 ]]; then
sudo -p 'Restarting as root, password: ' bash $0 "$@"
exit $?
fi
#read mirrorlist, "Server =" lines, remove all before and including "= " (10 char)
readarray -t mirrorArray < <(grep "^Server =" /etc/pacman.d/mirrorlist | cut -c 10-)
mirrorArrayLen=${#mirrorArray[@]}
let maxParallelDownload=$mirrorArrayLen/$maxMirrorForDownload
echo "mirrorsNumber:$mirrorArrayLen maxParallelDownload:$maxParallelDownload maxMirrorForDownload:$maxMirrorForDownload"
#randomize the order of the mirror
mirrorArray=( $(shuf -e "${mirrorArray[@]}") )
#now get the list of stuff to update
readarray -t packageList < <(checkupdates | cut -d ' ' -f 1,4)
pidToWait=''
mirrorIndex=0
for pkgNameAndVersion in "${packageList[@]}"; do
pkgName=${pkgNameAndVersion% *}
repoAndArch=($(pacman -Si $pkgName | grep 'Repository :\|Architecture :' | cut -c 19-))
repo=${repoAndArch[0]}
archpkg=${repoAndArch[1]}
downloadList=''
for (( i=0; i<$maxMirrorForDownload; i++ )); do
mirror=${mirrorArray[mirrorIndex]}
pkgNameAndVersion=${pkgNameAndVersion/ /-}
val=${mirror/\$repo/$repo}
val=$(echo ${val/\$arch/$arch}/$pkgNameAndVersion-$archpkg.pkg.tar.xz)
downloadList="$downloadList $val"
((mirrorIndex++))
if [[ $mirrorIndex -ge $mirrorArrayLen ]]; then
mirrorIndex=0
fi
done
aria2c -c $downloadList -d "pacmanCahceDir" &> /dev/null &
running=$(jobs |wc -l)
echo ">>> $(date +%T) | Downloading $pkgName, $running/$maxParallelDownload download"
while [ $running -ge $maxParallelDownload ]; do
sleep 0.1 #sleep 0.1 second
running=$(jobs |wc -l)
done
done
#now wait for all remaining jobs
echo "all download started, waiting for completition"
wait
if [[ $# -gt 0 ]]; then
echo "downloads complete, calling $1"
#DROP PRIVILEDGES
sudo -s -u $SUDO_USER $1 -Syu --noconfirm
else
echo "downloads complete, calling pacman"
pacman -Syu --noconfirm
fi
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