Shells

sh = “Bourne Shell”
- Named after author, old Unix standby shell
csh = c-shell, C like syntax structures
- tcsh = modern somewhat updated version
ksh = Korn Shell
- Introduced job control and other popular features now in bash
bash = “Bourne Again Shell”
- Variant of ksh, Popularized by Linux
- By far most common shell used today
Perl/Python = interpreted programming languages with many more features than shell, but can be used as more advanced platform for same tasks as shell scripts

sh = “Bourne Shell”