Finding the compiler version in your Unix system should be the first step before you attempt to compile any package from its source codes. In fact, if you're familiar with the common compilation routine, the configure script which you run to generate … [Continue reading] about Find Compiler Version in Unix
tee: Replicate Standard Output
Now and then I come across a situation when I need to run a script or a Unix command and would like to not only see the output of it on the screen, but also save this output to some log file. Redirecting the standard output using standard Unix stream … [Continue reading] about tee: Replicate Standard Output
How To Find Out RedHat Version And More
If you're a really curious mind, you won't be satisfied with simply knowing the current release of your RedHat Linux, that's why there's a few more commands you could use to satisfy your interest. RedHat release If you simply want to confirm whether … [Continue reading] about How To Find Out RedHat Version And More
How To Take A Screenshot in Unix (xwd)
Quite often there's a need for you to take a screenshot of your Unix desktop, and as always there's a number of ways to do it. Today I'm going to cover the command line approach to taking screenshots. Taking a Screenshot with xwd Most modern Unix … [Continue reading] about How To Take A Screenshot in Unix (xwd)
visudo tutorial
visudo is a tool for safely updating the /etc/sudoers file, found in most Linux systems (Ubuntu for example). This is the file that is required for allowing regular users run commands with superuser privileges - using sudo command. Here's what the … [Continue reading] about visudo tutorial
How To Mount An ISO image
Mounting an ISO image of a CD/DVD before burning it is one of the basic steps to verifying you're going to get exactly the desired result. It's also a neat trick to access files from a CD/DVD image when you only need a file or two and not a whole CD. … [Continue reading] about How To Mount An ISO image
script: Save Your Session Log
If you ever need to save the history of your Unix shell session, one of the easiest ways to do it is to use the script command, found in most Unix systems. Simply provide the file name for your log as a command line parameter: $ script … [Continue reading] about script: Save Your Session Log
Perl: Searching Through Directory Trees
I had a need to scan a huge directory tree today, identifying the users and Unix groups owning all the files. The problem I faced was too long usernames and group names which meant the find /directory -ls command which I normally use for such … [Continue reading] about Perl: Searching Through Directory Trees
Unix File Types
In Unix systems, there are 6 file types. Below I will give a very short description of each. How to find out the type of file in Unix The first and most obvious way to confirm the type of a particular file is to use the long-format output of ls … [Continue reading] about Unix File Types
How To: Use apt-get behind proxy
If you run your Ubuntu system behind a firewall and have to use proxy server for http and ftp access, then your apt-get on a newly installed Ubuntu system will probably not work. To make it use proxy, simply set the http_proxy environment variable. … [Continue reading] about How To: Use apt-get behind proxy
