Shorten
Filters lines in file and keeps only the only with length between -m and -M
Options
-v, --version : Shows version
-h, --help : Shows help
-i, --input : Input file to read, defaults to STDIN
-o, --output : Output file to write, defaults to STDOUT
-m, --minL : Minimum number of characters required to keep a row, defaults to 8
-M, --maxL : Maximum number of characters permitted in a row to keep, defaults to 64