This command will rename all files that have spaces in their filenames, in the current directory and recursively in its subdirectories, so that in the new filenames all spaces are replaced with underscores (‘_’ characters). find . -name ‘* *’ | while read file; do target=`echo “$file” | sed ‘s/ /_/g’`; echo “Renaming ‘$file’ to [...]

C++ autocompletion is possible with VIM. This is officially the coolest tech discovery I’ve made this year. And it’s easy to setup. Here’s how to configure C++ IntelliSense for Vim, with an example that demonstrates how to enable code completion for the the C++ Standard Template Library (STL). 1. Download You need the following: Vim [...]

The bc shell utility that is available on most UNIX/Linux distributions defaults to integer arithmetic (i.e. throws away anything after the comma). To prevent this, you can set the “scale” option in bc. E.g., the following command will return 3.333: echo “scale=3; 10/3″ | bc

To insert the output of a command (e.g. ‘ls’) below the cursor, type: :r !ls or :read !ls