Using HDMI for Audio Only
I prefer to use my TV (LG 32LE4600) as a monitor for almost everything, but I find it more practical to use the laptop screen when I’m facing my study desk.
Audio Streaming
Pulseaudio Way 1 - PULSE_SERVER Variable On the server (computer where the sound will come from, ip 10.0.0.3) Install paprefs julio@acer ~> sudo pacman -S paprefs Open paprefs and, …
Arch Linux Installation
In July 2012, a new image of Arch Linux (201207) was released, and on the same day, I decided to download and reinstall my system. Throughout the process, I noticed several changes …
Extract PDF Pages
Method 1 Simply print the pages you want as PDF. Most PDF viewers have this feature. The problem with this solution is that the page dimensions may be altered. Method 2 Install …
Find Duplicate Files
Duplicate files take up unnecessary space on the disk. Fortunately, there are tools that automate the search for duplicates. Fdupes Install fdupes: julio@acer ~> sudo pacman -S …
Hide Mouse
I rarely use mouse, in fact, since 2008 I don’t even have a mouse. After I bought my first notebook, the most I use to move the cursor is a graphics tablet, my keyboard shortcuts, …
Calculate Execution Time
In ZSH: julio@acer ~> time ./program Hello World! ./program 1.54s user 0.03s system 97% cpu 1.611 total julio@acer ~> type -a time time is a reserved word julio@acer ~> which time …
SSH Tunnel
Tunneling or tunneling is a very useful technique to bypass restrictions and create an encrypted channel for data traffic. SOCKS ssh -ND 8888 julio@host Parameters: -N: do not …
Security and Cryptography
The ability to securely share messages, keep secrets, and identify individuals has always been important to humanity. There are records showing that cryptography was already being …