https://github.com/CausticKirbyZ/rot13
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$ git clone https://github.com/CausticKirbyZ/rot13.git
rot13 (-d | -e) [-o
<charoffset>][-ex <exclusion list][-ch<charset>] ( (-f<filename>) |<message> )
./rot13 -e message
./rot13 -e -o 7 -f file1.txt
./rot13 -d -o 3 -ch abcd -f file2.txt
./rot13 -e -o 5 -ex , -f file3.csv
options:
-------------------
-d decode
-e encode
-o offset
-f file input
-ex exclusion list
-ch character set, default is entire ascii table
-h, --help help me