Simple Calculator - kcalc

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	Korn Shell: Unix and Linux Programming Manual, Third Edition, The By Anatole Olczak
	Table of Contents
	Appendix D.  Sample Korn Shell Scripts

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Simple Calculator - kcalc

This Korn shell script implements a simple expr-like command. Arithmetic expressions are passed in as arguments, and the result is displayed. Parentheses for grouping must be escaped.

 #!/bin/ksh  #  #     kcalc - Korn Shell calculator  #  # Initialize expression  integer EXPR  # Check usage  if (($# == 0))  then        print "$0: Must provide expression arguments."        exit 1  fi  # Set/evaluate EXPR  ((EXPR=$*))  # Print result  print $EXPR 

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