USAGE: replace [OPTIONS]
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
<ons> o:old n:new, example: 'new^^old' example: 'new^^old@@new1^^old1' rule example:
'new\s+new^^old@@new1^^old1'
<file> Input files to read, example: 'test.log test1.log'