/* atob * stream filter to change printable ascii from "btoa" back into 8 bit bytes * if bad chars, or Csums do not match: exit(1) [and NO output] * * Paul Rutter Joe Orost * * 7/29/90: added input and output file handling so to run on VMS, DOS, etc * add TMPDIR to handle tempory files. * VMS doesn't support unlink, so add a dummy one. * --kang sun (sun@robios.eng.yale.edu) */ [ usage: A binary file, let is call it `bin_file', can be convert it to a ascii file `asc_file' by btoa < bin_file > asc_file This ascii file can be transmitted via email. The ascii file can be converted back to original binary file by atob < asc_file > bin_file xiaofei for ftp-admin@ifcss.org ]