Development Tools
Querying a specific name server using dig
A practical tip on how to avoid cached results when looking up DNS records.
Aug 20, 2014Adding a user to the sudoers list in Ubuntu
Stop using root for administrative tasks. Here is how to add a new user to the sudoers list in Ubuntu.
Feb 28, 2014A more powerful version of grep
The utility command grep has a more powerful brother that let us use POSIX Extended Regular Expressions.
Jan 31, 2014Display disk usage with the du command
How to display the total of the current directory or a particular directory, as well as listing subtotals (subdirectories).
Dec 5, 2013SSH client configuration - Multiple servers and different keys
If you just like me daily connect to multiple SSH servers, then I have a tip for you.
Sep 25, 2013Display line numbers using the cat command
A simple feature you one day may be glad you know.
Aug 27, 2013Make apt-get assume yes as the answer to prompts during package installations
The way to avoid prompts when dealing with the APT package handling utility in Ubuntu Server.
Aug 22, 2013Create and extract tar archives compressed with gzip
For some reason I always find it hard to remember how to create and extract gzipped TAR archives, but here is how to do it.
Aug 19, 2013