| Environment-Variable | hängt ab von den Optionen... |
| DISPLAY | openwin |
| ENV | ksh, ksh5 |
| FMHOME | frame |
| FONTPATH | openwin |
| GUIDEHOME | guide |
| ICON_PATH | openwin |
| II_SYSTEM | ingres |
| INDEXSTYLE | tex |
| KEYMAP | openwin |
| LD_LIBRARY_PATH | hpnp, motif, openwin |
| LM_LICENSE_FILE | sunpro |
| MANPATH | beta, guide, hpnp, modula, newsprint, oberon, openwin, sunpro, tex, wais |
| MFINPUTS | tex |
| MOTIFHOME | motif |
| MOTIFPWD | motif |
| NEWSSERVER | openwin |
| OPENWINHOME | openwin |
| PATH | beta, bsd, frame, games, gnu, guide, hpnp, ingres, maple, motif, newsprint, openwin, pdrdb, rdb, secure, sepia, sunpro, sunsolve, sys, sys5, tex, tnt, wais |
| RDB | rdb |
| SEPIADIR | sepia |
| SHELL | bash, csh, ksh, ksh5, tcsh |
| TERM_INGRES | ingres |
| TEXFONTS | tex |
| TEXINPUTS | tex |
| TEXPKS | tex |
| TNTHOME | tnt |
| XAPPLRESDIR | openwin |
| XDVIFONTS | tex |