Bash script to convert IP Addr string to hexadecimal

Question

IP_ADDR=192.168.1.128

printf '% 02X' $ {IP_ADDR //./}; echo

Can someone explain how this simple oneliner converts IP_ADDR to hexadecimal? I hit my head trying to find documentation of this behavior.

+7

Santhosh May 27 '11 at 7:37

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2 answers

You can simply use gethostip (from syslinux-utils on Debian / Ubuntu):

 $ gethostip -x 192.168.1.128 C0A80180

0

Benjamin drung Jan 17 '18 at 17:01

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Ignacio Vazquez-Abrams · Accepted Answer · 2011-05-27T07:40:23+0000

 $ IP_ADDR=192.168.1.128 $ echo ${IP_ADDR//./ } 192 168 1 128 $ printf '%02X' 192 168 1 128 ; echo C0A80180