convert hexadecimal number to decimal whith shell script

Question

I need to convert a number from hexadecimal form to decimal form using shell script

for example :

convert()
{
    ...
    echo x=$decimal
}

result :

convert "0x148FA1"
x=1347489

How to do it?

Andrii Tykhonov · Accepted Answer · 2013-01-30 11:44:36Z

12

You can convert in many different ways, all within bash, and relatively easy.

To convert a number from hexadecimal to decimal:

$ echo $((0x15a))
346

$ printf '%d\n' 0x15a
346

$ perl -e 'printf ("%d\n", 0x15a)'
346

$ echo 'ibase=16;obase=A;15A' | bc
346

answered Jan 30, 2013 at 11:44

Andrii Tykhonov

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Comments

kumar_m_kiran · Accepted Answer · 2013-01-30 11:46:41Z

6

You can check this link. Fundamentally below code will help you.

h2d(){
  echo "ibase=16; $@"|bc
}
d2h(){
  echo "obase=16; $@"|bc
}

It is in pure shell scripting solution.

answered Jan 30, 2013 at 11:46

kumar_m_kiran

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An elegant solution that doesn't rely on bash. Thanks!

Pablo Santa Cruz · Accepted Answer · 2013-01-30 11:45:29Z

1

If you have a python interpreter available, you can always do:

#!/bin/sh
x="0x23"
val=`python -c "print int('$x', 16)"`
echo $val

answered Jan 30, 2013 at 11:45

Pablo Santa Cruz

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