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require 'formula'
class Vnstat < Formula
homepage 'http://humdi.net/vnstat/'
url 'http://humdi.net/vnstat/vnstat-1.11.tar.gz'
md5 'a5a113f9176cd61fb954f2ba297f5fdb'
def install
inreplace "src/cfg.c", '/etc/vnstat.conf', "#{etc}/vnstat.conf"
inreplace "man/vnstat.1" do |s|
s.gsub! '/etc/vnstat.conf', "#{etc}/vnstat.conf"
s.gsub! '/var/lib/vnstat', "#{var}/db/vnstat"
end
inreplace "man/vnstat.conf.5", '/etc/vnstat.conf', "#{etc}/vnstat.conf"
inreplace "cfg/vnstat.conf" do |c|
c.gsub! 'DatabaseDir "/var/lib/vnstat"', %Q{DatabaseDir "#{var}/db/vnstat"}
c.gsub! 'LogFile "/var/log/vnstat.log"', %Q{LogFile "#{var}/log/vnstat.log"}
c.gsub! 'PidFile "/var/run/vnstat.pid"', %Q{PidFile "#{var}/run/vnstat.pid"}
end
(var+'db/vnstat').mkpath
(var+'spool/vnstat').mkpath
system "make", "-C", "src", "CFLAGS=#{ENV.cflags}", "CC=#{ENV.cc}"
(prefix+'etc').install "cfg/vnstat.conf"
bin.install "src/vnstat", "src/vnstatd"
man1.install "man/vnstat.1", "man/vnstatd.1"
man5.install "man/vnstat.conf.5"
end
def caveats; <<-EOS.undent
To setup vnstat, run `vnstat -u -i en0' (replace en0 with the network
interface you wish to monitor).
You must then create a cron job to update the vnstat database.
Run `crontab -e' and add the following:
0-55/5 * * * * if [ -x #{bin}/vnstat ] && [ `ls #{var}/db/vnstat/ | wc -l` -ge 1 ]; then #{bin}/vnstat -u; fi
EOS
end
end
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