csb64enc -V (return code: 255)
csb64enc: invalid option: --version
csb64enc (return code: 255)
csb64enc: no input files
usage: csb64enc [OPTIONS ... ] infile1 [ infile2 [ ... ]]
options:
-w <n> set line width to n (default: 72)
-o <fname> output file name (default: stdout)