Unix shell programming examples with a calculator functionality.
Examples signed by tags:
Example_1 -- simple Makefile.
Example_2 -- simple calc with "expr" evaluation.
Example_3 -- shell spec. symbols escaping and formating input for "expr".
Example_4 -- Text UI.
Example_5 -- GUI.
Example_6 -- Network server.
Example_7 -- UI for networked calc.
Example_8 -- Localization.
Example_9 -- Russian L10N.