what is systems software?

Operating system and utility programs manage computer resources at a low level.
Software is generally divided into:
1. Systems software
2. Applications software

Applications software comprises programs designed for an end user, such as word processors, database systems, and spreadsheet programs.
Systems software includes compilers, loaders, linkers and debuggers.

Tech links: Embedded linux

1. Cross Compiler

http://www.linuxjournal.com/content/cross-compiling-options

2. Boot time reduction

http://www.linuxjournal.com/magazine/reducing-boot-time-embedded-linux-systems?page=0,2

3. Steps for building embedded linux systems

http://www.linuxjournal.com/article/9686