POSIX.1-1990,.1b-1993 and Linux

• Linux mostly compatible at the source level with IEEE POSIX 1003.1-1990

• An early version was certified for FIPS 151-2 compliance (from Open Linux Ltd.)

• Linux AIO presently has problems

• Test suites are freely available to measure compliance (VSX-PCTS,LSB-OS):

  • http://www.opengroup.org/testing/downloads.html
  • http://www.linuxbase.org/