bash arithmatic
Arithmetic in bash is done with $ and double parentheses: echo "$(($num1+$num2))" Or $ and square brackets: echo "$[$num1+$num2]" You can assign from that (sans echo). There is also expr: echo `expr "$num1" + "$num2"`
Arithmetic in bash is done with $ and double parentheses: echo "$(($num1+$num2))" Or $ and square brackets: echo "$[$num1+$num2]" You can assign from that (sans echo). There is also expr: echo `expr "$num1" + "$num2"`
