Tiny Core Base > TCB Tips & Tricks

awkcalc.sh

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MakodFilu:
As a one-liner, I thought of it more as a trick rather than a script.


--- Code: ---#!/bin/sh

echo '$*'|awk '{print "'$*'="'$*'}'

--- End code ---


--- Code: ---tc@box:~$ awkcalc 2^10
2^10=1024
tc@box:~$ awkcalc 2**10
2**10=1024
tc@box:~$ awkcalc 2*10
2*10=20
tc@box:~$ awkcalc '(1+1/2^20)^(2^20)'
(1+1/2^20)^(2^20)=2.71828

--- End code ---

Note the quotations in that last call.

roberts:
Cool! Yeah awk!

jls:

--- Code: ---tc@box:~$ echo $((1+1))
2

--- End code ---

robc:
sh math  :D

--- Code: ---#!/bin/sh
echo $@ = $(($@))
--- End code ---
http://www.linuxconfig.org/Bash_scripting_Tutorial#17-arithmetic-operations

Note: ash treats ^ as xor, not as exp

MakodFilu:
The way it is done in sh is via ** operator.

Anyway, here is more syntactic sugar:

http://www.grymoire.com/Unix/Awk.html#uh-34


--- Code: ---tc@box:~$ awkcalc "sqrt(2)"
sqrt(2)=1.41421
tc@box:~$ awkcalc "sqrt(2)"
sqrt(2)=1.41421
tc@box:~$ awkcalc "2**(1/2)"
2**(1/2)=1.41421
tc@box:~$ awkcalc "2^(1/2)"
2^(1/2)=1.41421
tc@box:~$ awkcalc "20%8"
20%8=4

--- End code ---

I just decided galculator.tcz had way too much features that I absolutely didn't need (:

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