The Bourne shell, more commonly nown as sh is a shell for Unix and Unix like systems.
Ranked in these QuestionsQuestion Ranking
Pro Truely the most broadly available shell
It may not be the best if you want power, but if you want to write a POSIX script that will run everywhere, it's a pretty good choice.
Pro Most influential Unix shell alongside csh
Bourne shell introduced features such as piping, here documents, command substitution, variables, control structures for condition-testing and looping and filename wildcarding.
Con Not suitable for interactive use
The Bourne shell has always been criticized (most notably by Bill Joy, author of csh) as being unfriendly for interactive use.
It has no tilde (~) expansion. Limited file test operators. Limited math operators.