Octal and hexadecimal are two numeral systems used in programming and computer science to represent integers. Octal uses base-8 and represents numbers using the digits 0-7, while hexadecimal uses base-16 and represents numbers using the digits 0-9 and the letters A-F.
In octal, each place value has a weight that is a power of 8. The rightmost place represents ones, then eights, sixty-fours, and so on. Octal is used frequently in file permissions and other parts of operating systems that deal with privileges. Numbers written in octal are typically prefixed with a zero, so 0755 would represent permissions that allow owner read/write/execute and others read/execute only.
Hexadecimal represents a more efficient way to write binary numbers on computers. Each hexadecimal digit represents a nibble (4 bits), so one hexadecimal character can convey twice as much information as an 8-bit byte written in decimal. Commo - bumuf25puc - https://webtoolsmate.com/octal-to-hexadecimal?unique_id_v3s2v3p4
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