gnu/linux
Rename in mass
prename is a utility developed in Perl by Larry Wall (creator of the Perl language) and improved by Robin Barker, which allows you to rename in masses. prename finds all files whose name matches a pattern specified (REGEXP). This utility is part of the perl package in Debian GNU/Linux.
Ftp behind a proxy or firewall
If you can’t connect to ftp site due by ISP provider/Network restriction then it is recommended that you use an ftp client that implements the hftp Protocol
Cropping images in mass
Recently a friend told me:
I have to remove the watermark of hundreds of images, you could do it with a program like GIMP but are hundreds of images, I know that you can automate this process using some commands of the ImageMagick suite; I need your help to make the script in bash.
Fixing ugly fonts on GNU/Linux
Some months ago when I replaced my Ubuntu 10.10 (Maverick Merkat) by Debian 6.0 (Squeeze) XFCE, on my work computer, it happened that the font rendering were very ugly, the desktop in general looked ugly then I found some interesting trick at the Arch Linux wiki, after reading: Font Configuration, I execute the following steps:
Install Iceweasel 5.0 on Ubuntu 10.10
Iceweasel is a completely free web browser based on Mozilla Firefox, but differs from it in that the logo and the brand can be distributed as free software
Get the size of a directory/file on GNU/Linux
Desktops such as GNOME, KDE, LXDE, XFCE offer an easy way to determine the size of a file or directory, right-click on the file in question, select properties from the context menu, but environments servers we dont like those mentioned above so it should resort to the CLI and make use of the du command which calculates the space occupied by a file or directory