One of the great features that Gentoo Linux provides to its users is the ability to control how packages are treated by setting individual and global settings whenever you build them.
This means that you can enable or disable some options when you are compiling your applications so that unneeded features such as X support or XML support could be avoided. (more…)
LiSt Open Files is a useful and powerful tool that will show you opened files. In Unix everything is a file: pipes are files, IP sockets are files, unix sockets are files, directories are files, devices are files, inodes are files…
So in this tangle of files lsof listst files opened by processes running on your system.
Now let’s start our quick tour and you’ll see the power of this tool.
All versions of OpenSSH’s sshd prior to 3.7 contain a buffer management error. It is uncertain whether this error is potentially exploitable, however, we prefer to see bugs fixed proactively.
As you know, when somebody ask for a nonexistent domain name like www.dfadfafasdfas.com, obtains a message telling that the domain does not exist.
Well, from now and thanks to our friends of Verisign, you’ll be directed to one of their advertising sites. And thanks again to this people fight against spam, network troubleshooting, etc will be more difficult…
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The key combination Ctrl-Alt-Del will typically causes your system to reboot. If you take a look at the /etc/inittab fille, you’ll see something like this:
ca:12345:ctrlaltdel:/sbin/shutdown -r now
As you probably know the chown command provides a way for the owner of a file to change the ownership of this file. In some circumstances (i.e. you want to know who created each file on your systems) you will want to avoid this behaviour.
For security reasons, sometimes you’ll want to only allow root logins from the console on your Solaris box. Next tip shows you how to do it.
Simply edit /etc/default/login and add the following line:
CONSOLE=/dev/console
This will disable rlogin or telnet as root.
If you come from an RPM based GNU/Linux distro, surely you are familiar with the RPM package manager. Gentoo Linux provides a similar tool for you to make the transition easier.
Martian address errors occur when anyone is trying to connect to your system from the internet with incorrect IP addresses, such as non-routable or spoofed IP addresses.
As you probably know, man pages contain escape characters used for formatting the text.. This escape characters are very annoying if you want to get a printed copy or want to see the man pages in your favorite editor.
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