Unix shell programming examples with a calculator functionality. Examples signed by tags: Example_1 -- simple calc with "expr" evaluation. Example_2 -- shell spec. symbols escaping and formating input ...

In Bash shell scripting, functions are ways to group the set of instructions together to get a specific outcome. You can think of functions as a mini script. Functions are also called procedures and ...

reading an authoritative specification and writing short examples of code to illustrate the specification running the examples using an open source implementation and reading the source code to ...