According to themselves:
The LSB specifies for example: standard libraries, a number of commands and utilities that extend the POSIX standard, the layout of the file system hierarchy, run levels, and several extensions to the X Window System.
The LSB has been criticized for not taking input from projects outside the member companies sphere, most notably the Debian project. For example, the LSB specifies that software packages should be delivered in Red Hat's RPM format, which was invented much later than Debian's "deb" package format, and the Debian developers are not likely to change their format, which they naturally perceive as superior. Some say this is not a major issue since the RPM format specified by the LSB is well-supported by the Debian "alien" program that can be used to import packages stored in other binary formats.
In other areas, however, the LSB work has been met with much gratitude.
Criticism
External Links