Rename files
My script I wrote a Python program that took less than 24s for over 27500 files: https://github.com/jbsilva/renamer It removes spaces and changes special characters recursively. …
Vim: Save read only
Today, after a long time editing the Apache configuration file (/etc/httpd/httpd.conf), I realized that I was logged in as a normal user and couldn’t save the file (E212: Can't …
Nohup and Disown
When we log out or type exit in a terminal, a hangup signal is sent to the shell, terminating all its child processes. The term used is hungup, as computer users from the last …
Vim without Esc
As I have mentioned in a previous post, I consider the Esc key on my keyboard to be not only small but also poorly positioned. For a frequent user of the Vim editor, this is a …
Rsync - Limit Upload
Today my father asked me to send him some things. There were 10 files of approximately 250MB each; too much work to send via email, 2.5GB would exceed my limit on Dropbox, and …
Remove CRLF
To maintain the standard used in old Teletypes, DOS/Windows uses two control characters to represent a line break, a Carriage Return (CR = 0x0D) and a Line Feed (LF = 0x0A), but …
Lock Screen
Leaving the computer logged in with programs running is quite routine for me. Uptimes of several weeks are not uncommon. However, leaving X or a terminal open in your absence can …
Double Hyphen in Wordpress
Before migrating to Octopress (and later to Hugo), this blog was written in Wordpress. Every time I posted a tutorial with commands that have options with double hyphens (example: …
Extract audio from FLV
Just run the following command: julio@julio-acer ~> ffmpeg -i File.flv -ar 44100 -ab 256k -ac 2 file.mp3 Links http://gnuru.org/article/1549/extracting-aac-audio-flv-file