This tag is meant for everything that has to do with mathematical operations. So if you want to ask a question about doing calculations in `awk`, or if you have a question about `bc`, this is the right tag to use.

learn more… | top users | synonyms

0
votes
1answer
51 views

Bash script to add or subtract two numbers from user input

I am very new to Linux and am taking a course in it. Very excited to learn more. I am working on a script that asks user for two numbers, then asks whether user wants to add or subtract. I failed the ...
3
votes
0answers
72 views

Shell Arithmetic Expansion with Quotes

In Bash and Dash, using quotes in an Arithmetic Expansion is illegal: $ bash -c 'x=123;echo $(("$x"))' bash: "123": syntax error: operand expected (error token is ""123"") $ dash -c 'x=123;echo $(("$...