NixOS TIP: OTP in Gnome login screen
Add to your configuration.nix Then do a And from the user shell
Category: Tips & Tricks
Arch to Manjaro – the dirty way
In my lab I’ve been running arch on a NFS server and the filesystem used is ZFS. I think you already know that in Arch the zfs packages are located in AUR. There are several options like zfs-linux and zfs-dkms. Sadly both are problematic during kernel updates. One solution I…
DokuWiki a simple solution to sorting documentation
In the IT world you can’t just remember everything you ever do, so you need a way to set a trail of what you do. Some people write journals and some (me included) write their documentation in a wiki. Wiki today means Wikipedia, Wikipedia runs MediaWiki software which is a…
Quick TIP: Postfix Reverse lookup
When your maillog on a CentOS/*EL machine looks like this: mail postfix/smtpd[19345]: connect from unknown[XXX.YYY.ZZZ.QQQ]
follow the logs
Well, on a high-traffic mail server we need to follow the server log, to look for possible issues. The “tail -f” method might just not be as good as we would want, text is going up too fast and web just can’t read that fast. A solution to that is…
Per site custom CSS
Let’s say you’re on a news website for instance bbc.co.uk, that you read a lot, but each time you look on the website you can’t tell if you already visited that portion of the website or not. Let’s say you still have a chance, there’s a Firefox and Chrome add-on…
MySQL requires maintenance
Even if you’re running on a tiny VPS or on a huge server when you have a LAMP stack your biggest memory consumer will probably be MySQL. Some even prefer running it on a different machine when it comes to high traffic web apps. But, as your apps are put…
modern days aliases
Asuming we have on a mail server(that hosts domain1.com) some external aliases, like user1@domain1.com has an alias for user1@domain2.com, which is hosted on a different server, probably on a different mail provider. Typically when a mail is sent to user1@domain1.com, it’s sender’s mail server sends the mail to the MX…
Use wheezy-backports and set it as default
Because Debian Linux distro has it’s way of testing packages before they end up in the stable version, these packages might be sometimes outdated or you just wand to benefit from the newest functionalities for some packages. Debian Backports is a repository that you can use for these cases. In…
OpenVPN and Android
To be honest I use OpenVPN quite rarely on my Android tablet, and it happens only when I need to access certain locations that tie me to a certain IP address. This type of connection could be more often used when the tabled would serve as an email reading device…