$ cargo install pattern

$ pattern -l 10 Aa0Aa1Aa2Aa3Aa4Aa5Aa6Aa7Aa8Aa9Ab0Ab1Ab2Ab3Ab4Ab5Ab $ pattern -o Aa6A 18

pattern 1.0.0 encry1024 <encry1024@gmail.com> USAGE: pattern [FLAGS] [OPTIONS] FLAGS: -b Using big endian -h, --help Prints help information -V, --version Prints version information OPTIONS: -l, --length <length> The length of payload -o, --offset <offset> Calculate the offset with given value