How to convert Decimal to Octal, binary, Hexadecimal from command line, When you work at routing, you will find yourself converting decimal to binary and the opposite, specially for the masks of the IP address, here I will show you how to do it easily using your command line terminal. Decimal to Hexadecimal echo ‘obase=16;10’| bc A Or wcalc -h 10 Decimal to Octal echo ‘obase=8;10’ | bc 12 Or wcalc -o 10 Decimal to Binary echo ‘obase=2;10’ | bc 1010 Or wcalc -b 10 From Hexadecimal to decimal echo ‘ibase=16;A’ | bc 10 From Octal to Decimal echo ‘ibase=8;12 | bc 10 From Binary to Decimal echo ‘ibase=2;1010 | bc 10

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