To initially setup the time if there is a big difference you can use the following command

 /usr/sbin/ntpdate -s -b -p 8 -u yourISP.NTP.Server.IP

Debian:

Setting timezone:
sudo dpkg-reconfigure tzdata

/etc/ntp.conf
server 0.bg.pool.ntp.org
server 1.europe.pool.ntp.org
server 2.europe.pool.ntp.org

Great references http://www.akadia.com/services/ntp_synchronize.html

hwclock –systohc

Trac
==Start the administration==
trac-admin /home/domains/spider/trac-dagensps

==Run the server with==
tracd –auth=*,/home/domains/spider/.passwords,spider.bg –port 8000 /home/domains/spider/trac_envs/dagensps /home/domains/spider/trac_envs/trucks

==Add users==
htdigest /home/domains/spider/.passwords spider.bg a.inkov@spider.bg

==Apache Integration==
http://trac.edgewall.org/wiki/TracCgi#AddingAuthentication
Here is what I use to start the trac in spider:
router:/home/domains/spider# cat trac.start.sh
#!/bin/bash
tracd –port 8000 \
–auth=dagensps,/home/domains/spider/.passwords,spider.bg /home/domains/spider/trac_envs/dagensps \
–auth=trucks,/home/domains/spider/.passwords,spider.bg /home/domains/spider/trac_envs/trucks \
–auth=bbi,/home/domains/spider/.bbi_passwords,spider.bg /home/domains/spider/trac_envs/bbi/

Java install

ls /usr/portage/dev-java/sun-jdk/
emerge -av =dev-java/sun-jdk-1.5.0.13
java-config -L
java-config -S 1
/usr/sbin/env-update && source /etc/profile

Emerge and Equery

Taken from here

emerge brings in new packages. equery looks at the package database.

update repository:

emerge –sync

install package with query

emrge -av sun-jdk

start with this software

emerge links wget htop

emerge …

manipulate package database

emerge -NDtu world

–update packages and packages that depend on updated packages (–deep) in the world list. Give output in –tree format. Consider packages changed if their USE flags have changed (–newuse, -N) Add –pretend (-p) to just see what it will do first.

emerge –skipfirst …

skip first pkg on a rebuild; very useful if something doesn’t work

equery …

query package database

equary belongs

who owns these files?

equery list

list packages on system

Maintenance

Taken from here

Do this whenever you want a steaming pile of fresh packages.

# emerge --sync
# emerge --update system
# etc-update if necessary
# emerge --update world

I have seen Meddle to do it this way

emerge –newuse –deep –update world
emerge –ask –verbose coreutils
emerge –resume

Fix the mktemp / coreutils block in Gentoo

Looks like mktemp is now provided by coreutils. No wonder. This block has been bugging me (read: I’ve been ignoring it) for months.

To fix just unmerge mktemp and update coreutils.

Update: Same for the setarch / util-linux block should you come across it. Unmerge setarch.