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Another way with bash
Authored by: tflight on Feb 02, '05 10:05:34AM
I added the following to my .bash_profile file to accomplish something similar:
function calc () {
        awk "BEGIN { print $* ; }"
Then you can bring up the terminal and type things like "calc 9*9" or "calc 3^3" which will return 81 and 27, respectively.

Your .bash_profile file is located in your home directory. In the terminal you can type "cd ~" to make sure you are in your home directory then use a text editor like pico "pico .bash_profile" to edit the file. After saving the file (control-x) you will need to log out and back in for the changes to take effect.

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Another way with zsh
Authored by: adrianm on Feb 02, '05 01:43:26PM
if using zsh, try having a function like this

function calc {
  print $(($*))
and then you can type, eg calc 9+3

Of course you could also just type print $((9+3)) but that would just spoil the fun.

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Another way with csh/tcsh
Authored by: winswitcher429 on Feb 02, '05 03:55:54PM

I have an alias setup in my .cshrc file that looks like this

alias calc 'echo " scale=4;\!*" | bc'

You can then from the command line type in

%calc 5 * 45 + ( 324 - 17 ) / 15

What's really cool about almost ALL of these hints is that they work on almost ALL Unix versions. I also have this setup on my OpenStep, Solaris and Linux machines and this works that same on all of them

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