Ever located an old capture file and you weren’t sure what was in it or needed to grab some quick statistics about another capture file? What about needed to run statistics on multiple capture files and present them via a database or a spreadsheet? Well if you have ever run into any of these scenarios then capinfos is worth a look. The capinfos command is available via the Backtrack CLI and provides statistic information about cap files. This is one of the gems located on Backtrack that nobody ever hears about.
I have been using the cut command a lot recently to shed extra data from large text files. I typically use cut with a specific delimiter by activating the -d switch and I thought that the -d switch was required. It turns out that -d is not required and by default -d actually defaults to the delimiter being a tab. When you need to have a tab as the delimiter for cut you simply don’t specify the -d switch. Below I show a couple examples of a file trimmed down using cut with and without the -d switch as well as another way to convert tabs in a file to spaces which then will allow you to use the Linux cut command with the -d” ” switch.
I needed to use some GUI tools recently for testing hard drives in a large RAID group on a CentOS Linux server that I only have remote access to so I decided to install VNC temporarily. The server has never had a GUI installed so I first installed the Gnome Desktop Environment, then installed VNC, configured VNC, and last attempted to start VNC but I received an error. The error was complaining of the default fonts not being in the proper location however the error output was excellent and allowed me to create a quick symlink to resolve the issue. Below I describe the error in more detail followed by the one command resolution.
Locating the Ubuntu version is easy regardless of if you need to locate the Ubuntu Linux version from the CLI or via the Ubuntu GUI. I always forget what the CLI command is so this is as much reference for myself as it is sharing with others. Below I describe how to determine Ubuntu version from the Ubuntu Linux CLI and the Ubuntu Linux GUI.
When testing websites it may be beneficial to spoof the referer URL. I have used these methods in the past to locate bugs in code or files that have been infected with forms of search engine click jacking. The two easiest methods that I have found are using the Google Chrome extension called Spoofy or just using curl from the Linux CLI. Typically using curl is the easiest but if you are not familiar with curl then Spoofy also provides similar results. Below I describe both methods in detail.