bc: interpreted mathematical language: glorified calculator [optional] cpio22a: the cpio backup and archiving utility [optional] elm2421: a user mail program [recommended] fixkbd: reset your keyboard after you "cat" a binary file [required] lx99p9: the source code for the Linux kernel [optional - but needed to use C] lxpatch: patches to apply to the kernel [optional] man2: online documentation for Linux system calls [optional] tin11p8: the 'tin' news reader [optional] ksh: The Korn Shell with man-pages [optional]