Monthly Archives: February 2012

Browsing without ads on mobile browsers

Posted on February 17, 2012 by ronaldpringadi

This post used to recommend a now-defunct Android app called “Ad Block” that turned your phone into its own proxy server. The app is gone, the Play Store link is dead, and the proxy-based approach has been superseded several times … Continue reading →

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Benchmark How Long a Program Runs In Linux Using Bash

Posted on February 14, 2012 by ronaldpringadi

The following bash code might come in handy if you want to benchmark how long a program runs. The example assumes you want to pass two parameters along to the program. A timestamp is captured at the start and end … Continue reading →

Posted in Linux, Operating System, Ubuntu | Leave a comment

Auto Login Using SSH Public and Private Keys

Posted on February 13, 2012 by ronaldpringadi

2026 update: This post originally used ssh-keygen -t rsa. The current recommendation (e.g. GitHub’s SSH key guide) is Ed25519 — it produces shorter keys, is faster, and is considered more secure. Use RSA (4096-bit) only as a fallback for systems … Continue reading →

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Linux symlinks: creating, deleting, and the gotchas worth knowing

Posted on February 13, 2012 by ronaldpringadi

The basic command for creating a symbolic link (a “symlink” or “soft link”) to a folder or file is ln -s: 12345678ln -s /home/ronald/somefolder /home/ronald/newfolder # or if your current directory is already /home/ronald: cd /home/ronald ln -s somefolder newfolder … Continue reading →

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