Generate Random 20-Character Hex String
unix
Written October 12, 2023
The openssl utility has a bunch of subcommands including rand. The rand
subcommand can be used to generate pseudo-random numbers.
openssl rand -hex 10
5ce459896581abc81a65
The number at the end of the command tells rand how many bytes of output to
generate. When the -hex flag is used, it will encode the output in hex.
The 10 bytes of output in hex will result in a 20-character string. That number can be adjusted to your needs.
See man openssl or openssl rand -help for more details.