Linux Standard Base commands

Commands defined in the Linux Standard Base 4.1:
http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cmdbehav.html

Downloadable as one big file from:
http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic.html