uuencode [-m] [
Encode a binary file. The encoding uses only printable ASCII characters and includes the permissions and name of the file. When file is reconverted via uudecode, the output is saved as name. If the file argument is omitted, uuencode can take standard input, so a single argument is taken as the name to be given to the file when it is decoded. With the -m option, base64 encoding is used.
It’s common to encode a file and save it with an identifying extension, such as .uue. This example encodes the binary file flower12.jpg, names it rose.jpg, and saves it to a .uue file:
% uuencode flower12.jpg rose.jpg > rose.uue
Encode flower12.jpg and mail it:
% uuencode flower12.jpg flower12.jpg | mail email@example.com