• Read UNIX V6 source code in 1980.
  • First payed UNIX related work with UNOS in 1982.
  • Designed/implemented first Shell history LRU editor in 1982.
  • Worked on first Sun-Microsystems computer in Europe in February 1985
  • Designed/implemented first SCSI generic driver in August 1986.
  • Designed/implemented first "file emulates blockdevice" driver in 1988.
  • Designed/implemented first Copy-On-Write filesystem 1988-1991.
  • Wrote cdrecord in late 1995.
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