After some Solaris kernel projects, I lost interests in Linux. :(

Recommended configuration options which are useful and either not enabled or missed from distro.

vsftpd.conf options:

use_localtime=YES
hide_ids=YES
hide_file={lost+found,foo}
deny_file={lost+found,foo}

smb.conf options:

interfaces = eth0
bind interfaces only = yes
hosts allow = 192.168.1.
hide files = /lost+found/foo/

This perl script gets Week_Of_Year from string like"2009-05-06".

use POSIX;
my $date = "2009-05-06";
my @d = split "-", $date;
my $week_of_year = strftime("%W", localtime
mktime(0,0,0,$d[2],$d[1]-1,$d[0]-1900));
print $week_of_year, "\n";

With postfix 2.4.5, virtual_alias_domains seems not work.

In main.cf,

virtual_alias_domains = domain.tld
virtual_alias_maps = mysql:/etc/postfix/mysql-alias-maps.cf

In mysql-alias-maps.cf, use either '%s' to do a full match or '%u' with a 'domain = domain.tld'.

How I put a website under SVN

/etc/apache2/sites-available/foo
<VirtualHost *>
RedirectMatch 404 .*/\.svn(/|$)
</VirtualHost>

$ cd /var/
$ tar zcf /tmp/foo-src.tar.gz www-foo \
--exclude=www-foo/htdocs/photos --exclude=...
$ cd /tmp
$ newgrp www-data
$ tar zxf foo-src.tar.gz
$ exit
$ svnadmin create /srv/scm/www-foo
$ svn import www-foo file:///srv/scm/www-foo

$ cd
$ svn co file:///srv/scm/www-foo
$ cd www-foo
$ find . -name .svn | xargs tar zcf /tmp/foo-svn.tar.gz
$ cd /var/www-foo
$ tar zxf /tmp/foo-svn.tar

$ rm -rf /tmp/www-foo
$ rm /tmp/foo-src.tar.gz /tmp/foo-svn.tar.gz

$ newgrp www-data
$ umask 27
...
$ exit