Simple shell project - exercise from book "Modern Operating Systems", Andrew S.Tanenbaum
Based on assignment: http://www.cs.cornell.edu/Courses/cs414/2004su/homework/shell/shell.html
###Include:
- executing commands with parameters
- history,
- pipes,
- arrow-searching in history,
###TODO:
- STDIN/STDOUT redirection,
- !number notation for history,
- commands in background,
###Author Lukasz Hryniuk