Ok, that sounds funny, doesn't it? Well, it turns out, sometimes, you want to test your kernel dump or something of the sorts. Here's how to do it:

echo c > /proc/sysrq-trigger

This will, instanly, crash your kernel.

References:

• Todor Tanev from StorPool.

I've been writing some script to configure some firewall and came up with this way of asking a question in Bash. I hope it helps as an example. Feel free to contribute your own:

#!/usr/bin/env bash

ask() {
    local query=$1

    if ( echo $query | grep -qi password ); then
        read …

Warning: If you update dovecot on CentOS 7, it will brake! You need to update one of the config files in order for it to keep working:

# /etc/dovecot/conf.d/15-mailboxes.conf
...

namespace inbox {
    ...
    inbox = yes
    ...
}
...

So, basically, you need to add inbox = yes within the inbox namespace.

OK, it's fairly easy to get this done on a distro like Funtoo/Gentoo or Fedora, which are the distros I use.

First of all, you need to install this thing on your server:

# Fedora
su -
dnf -y install letsencrypt

# Funtoo/Gentoo
su -
mkdir src && cd src
git clone https …

Me ha interesado mucho el lenguaje de programación crystal: http://crystal-lang.org/.

Este lenguaje tiene la sintaxis muy parecida a Ruby; si no es que igual. Parece que hasta el Matzu; creador de Ruby, es fan del proyecto.

En todo caso, para compilarlo en Fedora, hice un script. El script …