A simple command line calculator.

The binary name is tc. If you are already in a terminal session and need a quick calculation, typing tc "2.5 + 3.73 / 4" is actually faster than grabbing your desktop calculator or starting and using a calculator app.

tc is also a lot simpler to use than bc or dc.

The manual states quite everything you need to know about tc. (and it'll take you about one minute to read)

$ tc "1.2 + 3^2 + sqrt(12)"
1.2 + 3^2 + sqrt(12) = 13.664101615137753

$ tc "cos(pi/3)" "sin(pi/6)"
cos(pi/3) = 0.5000000000000001
sin(pi/6) = 0.49999999999999994

$ tc -s "12*3 + 18*2.5 - 3 * 2.3" # or --strip
74.1

$ tc "1.4 + son(pi/6)" # typo
1.4 + son(pi/6)
      ^^^
error: Function `son` is unknown

See Grammar.ebnf

Several methods are supported. If you are a rust developer, you can use cargo directly:

$ cargo install termcalc

This will install the program tc on all supported platforms.

Other methods: work in progress

On Linux, tc is a kernel system utility (Traffic Control). Snap and distribution packages will install a binary named termcalc. If you don't use the system tc, you are encouraged to create a tc alias to termcalc like so:

$ echo "alias tc=termcalc" >> ~/.bash_aliases
$ source ~/.bashrc

If it doesn't work, uncomment or append the following to ~/.bashrc

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
fi