Debian / Ubuntu Linux HowTos and Guides
Tutorials, howtos, Q & A about GNU/Debian and Ubuntu Linux. Topic includes server security, installation, firewall, web-server, mail-server, proxy server and and much more. ( rss feed ).
ecently Debian Linux version 7.0 (“Wheezy”) released
. This version shipped with many new features – improvements to multimedia support, improved security through hardening flags and the OpenStack suite and the Xen Cloud Platform to name a few. How do I upgrades from Debian Linux version 6.x.x (squeeze) to the latest version 7.0.0 wheezy using command line options? How do I upgrade my Debian 6.x server to 7.x over the ssh session?
y iptables based firewall allows only port TCP 80 and 443. I also need tcp port # 22, but I do not have static IP at my home. How do I open and close TCP port #22 on demand under Debian or Ubuntu Linux based server systems? How do I install a port-knock server called knockd and configure it with iptables to open tcp port #22 or any other ports?
ow do I install rubygems package manager for Ruby on rails (RoR) under Debian or Ubuntu Linux operating systems?
have the following message whenever I use the apt-get command under Debian or Ubuntu Linux:
The following packages were automatically installed and are no longer required:
libaccess-bridge-java libjs-mochikit python-cheetah libjs-excanvas
libaccess-bridge-java-jni sabnzbdplus-theme-smpl tzdata-java
Use ‘apt-get autoremove’ to remove them.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
How do I fix this issue? Is it safe to remove all unwanted packages?
ow do I install Java and C/C++ integrated development environment called Eclipse under Debian GNU/Linux squeeze v6.xx?
ppArmor is a Linux Security Module (LSM) implementation of name-based mandatory access controls (MAC). How do I start / stop / restart AppArmor under Ubuntu Linux or OpenSuse / Suse Enterprise Linux server systems running on IBM hardware?
have a large number of files stored in ~/Downloads/ directory. How do I sort and print sizes in human readable format using du -h
command under Ubuntu Linux LTS version 12.04 or any other Linux distributions?