In the Filesystem Hierarchy Standard used by Linux operating systems, all files and directories appear under the root directory “/” but access to it is often restricted for security reasons. In Linux distributions like Debian, you can gain full access from the SSH by using… Read More »Debian: How to Add a User to Sudoers
Using nfsen it is possible to view IP traffic statistics on Linux interfaces including the graphs showing data sent and received (see the screenshot to the right) as well as historical information about all data transfers. So after you’ve configured nfsen and nfdump to monitor… Read More »Install nfdump and nfsen netflow tools in Linux
It was long time ago when I wrote here last time but today I’d like to share the link to an application that would be appreciated by everyone starting from Linux starter wishing to speed up his/her Internet connection and ending with system administrators who… Read More »Namebench: cross-platform DNS benchmarking tool
By default Cisco IOS doesn’t provide any traffic monitoring tools like iftop or iptraff available in Linux. While there are lots of proprietary solutions for this purpose including Cisco Netflow Collection, you are free to choose nfdump and nfsen open source software to monitor traffic… Read More »How to monitor traffic at Cisco router using Linux (Netflow)
The easiest way to split, merge or edit pdf files in Ubuntu is to use pdftk utility. This rather old (latest version was released in 2006) but still simple and powerful program can be installed in Ubuntu (Debian or any deb-family Linux distribution) by the… Read More »The easiest way to split and merge pdf files in Ubuntu
Preparing for Cisco certification exam and need real equipment required to accomplish all those CCNA or CCNP labs? That’s not a problem any more. This is due to availability of Packet Tracer for Linux and Community Lab hosted by people behind packetlife.net. As for Packet… Read More »Access to real Cisco routers and switches for free
Update: as far as cryptoloop is vulnerable and is not maintained I don’t recommend using below approach for creating encrypted for for those of you who require strong security. Use truecrypt to create encrypted filesystem within a file instead. Today it came to my mind… Read More »16 GB encrypted candy file
This post is dedicated to quality html editors for Linux and Ubuntu operating system in particular. You may think that nowadays nobody uses offline editors as there are so many content management systems (CMS) like Drupal (my favourite one), WordPress, Joomla etc. which contain embedded… Read More »Top 3 Linux HTML editors
Want to sort file contents by each line’s lenght? No problems:
artemn@artemn-laptop:~$ cat /etc/passwd | awk '{print length, $0}' | sort -n | awk '{$1=""; print $0 }'
Imagine the following situation: you have to compile some Linux/Unix application or kernel module that requires kernel source present at your hard drive, say, in /usr/src/kernels/kernel-2.6.21-i386/ or elsewhere. But there is not enough disk space to copy these sources or install kernel-devel or linux-source packages… Read More »Mount remote filesystem via ssh protocol using sshfs and fuse [Fedora/RedHat/Debian/Ubuntu way]