As programmers, we often encounter numbers written in binary or hexadecimal format. Mostly it is written as the context is made easier. For example, a set of flags is better represented as binary than integer. Here's an example :-

In such scenarios, it could get confusing as to what the number represents in integers. Many, here, would suggest creating a program in the language of your choice and using it for base conversion. So, here I explain how one can use BASH itself.

BASH allows base conversion very easily. Fire up a terminal and try this :-

So here we have a simple base converter. Interestingly, the base conversion allows to convert from any base to decimal this easily :

The above is sufficient to convert number given in any base to decimal value. Go ahead, try it out.

#define IS_TRUE 0b01 // same as 1 #define IS_FALSE 0b00 // same as 0 #define CONFIRM 0b10 // same as 2 #define DOUBTFUL 0b00 // same as 0This example might not be very common, but this demonstrates the use of binary representation. These flags are useful at binary level to facilitate " bit-level AND " and various other operations.

In such scenarios, it could get confusing as to what the number represents in integers. Many, here, would suggest creating a program in the language of your choice and using it for base conversion. So, here I explain how one can use BASH itself.

BASH allows base conversion very easily. Fire up a terminal and try this :-

echo $((2#1010101))I assume, I needn't explain

`$((<operation>))`

is necessary for mathematical operations in BASH. The output of the above command is 85, which is the decimal value of the number "0b1010101".So here we have a simple base converter. Interestingly, the base conversion allows to convert from any base to decimal this easily :

<base>#<number_in_base>

The above is sufficient to convert number given in any base to decimal value. Go ahead, try it out.

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