$ man ls > ls.man
$ man xterm > xterm.man
$ man cp > cp.man
$ bzip2 -v *.man
  cp.man:     2.496:1,  3.206 bits/byte, 59.93% saved, 5690 in, 2280 out.
  ls.man:     2.644:1,  3.026 bits/byte, 62.18% saved, 8093 in, 3061 out.
  xterm.man:  5.062:1,  1.580 bits/byte, 80.24% saved, 264279 in, 52210 out.
$ zip -0m mans *.man.bz2
  adding: cp.man.bz2 (stored 0%)
  adding: ls.man.bz2 (stored 0%)
  adding: xterm.man.bz2 (stored 0%)
$