Bash script to select fast mirror

Question

I've written this basic script which can be used to select a mirror from pacman's mirrorlist file which minimizes the response time between you and the mirror. This often leads to satisfactory download speeds. You might have to change some of the variables at the beginning of the script to suit your needs.
#!/bin/bash
# mirrorize v0.1 - Fast mirror selector for pacman
# Copyright (C) 2009 sin
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
if [ ! "$UID" == "0" ]; then
echo "[+] you cannot perform this operation unless you are root." 1>&2
exit
fi
MIRROR_PATH="/etc/pacman.d/mirrorlist.pacorig"
BEST_MIRROR=""
BEST_TIME=300 # ms
TMP=$(mktemp)
function cleanup() {
rm -f $TMP
trap cleanup SIGINT SIGTERM
cp $MIRROR_PATH $MIRROR_PATH.backup
for mirror in `cat $MIRROR_PATH | sed 's/#//g' | grep ':' | sed 's/Server = //g' | sed 's/ftp:\/\///g' | sed 's/http:\/\///g' | sed 's/\/.*//g'`; do
M=$(ping $mirror -B -w 2 -n -c 4 2>/dev/null | grep rtt | awk -F '/' '{print $5}')
if [ ! -z "$M" ]; then
M=${M/.*};
if [ "$M" -lt "$BEST_TIME" ]; then
BEST_TIME=$M
BEST_MIRROR=$mirror
echo "[+] found a faster mirror [$BEST_MIRROR] => response time = $BEST_TIME ms"
fi
fi
done
if [ ! -z "$BEST_MIRROR" -a ! "$BEST_MIRROR" = "ftp.archlinux.org" -a ! -z "$BEST_TIME" ]; then
sed 's/^Server/#Server/g' $MIRROR_PATH > $TMP; cat $TMP > $MIRROR_PATH
cat $TMP > $MIRROR_PATH
line=$(egrep -in $BEST_MIRROR $MIRROR_PATH | uniq | sed 's/:.*//g' | head -1)
extension="ftp"
cat $MIRROR_PATH | head -$line | tail -1 | egrep -i "ftp:" 1>/dev/null
[ $? -eq 0 ] || extension="http"
sed -e "${line}s/^#Server = .*${BEST_MIRROR}/Server = ${extension}:\/\/${BEST_MIRROR}/g" $MIRROR_PATH > $TMP
cat $TMP > $MIRROR_PATH
fi
cleanup
pacman -Syy
Last edited by dimigon (2009-03-07 23:36:46)

Answer 1

Heema wrote:
made a little update for it so it doesnt requir root acount
it also now adds last sync times to the results
#!/bin/bash
# mirrorize v0.1 - Fast mirror selector for pacman
# Copyright (C) 2009 sin
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
MIRRORLIST=$(mktemp)
cat /etc/pacman.d/mirrorlist > $MIRRORLIST
MIRROR_PATH="$MIRRORLIST"
BEST_MIRROR=""
BEST_TIME=300
TMP=$(mktemp)
LIST=$(mktemp)
wget -q "http://users.archlinux.de/~gerbra/mirrorcheck.html" -O /tmp/mirrorcheck.html
function cleanup() {
rm -f $TMP
rm -f $LIST
rm /tmp/mirrorcheck.html
trap cleanup SIGINT SIGTERM
echo "Pinging Servers..."
for mirror in `cat $MIRROR_PATH | sed 's/#//g' | grep ':' | sed 's/Server = //g' | sed 's/ftp:\/\///g' | sed 's/http:\/\///g' | sed 's/\/.*//g'`; do
M=$(ping $mirror -B -w 2 -n -c 4 2>/dev/null | grep rtt | awk -F '/' '{print $5}')
if [ ! -z "$M" ]; then
M=${M/.*};
if [ "$M" -lt "$BEST_TIME" ]; then
BEST_MIRROR=$mirror
LASTSYNC=$(cat /tmp/mirrorcheck.html | grep -A 13 "$BEST_MIRROR" | tail -n 1 | sed 's/<td>//g' | sed 's/()<\/td>//g' | cut -c 7-)
echo "$M $mirror Not synced since: $LASTSYNC" >> $LIST
fi
fi
done
cat $LIST | sort -n
cleanup
Cheers! Nice one