What is the meaning of *nix?

5-letter words containing

• 5-letter words containing r

• 5-letter words containing l

• 5-letter words containing u

• 5-letter words containing o

• 5-letter words containing a

5-letter words starting with

• 5-letter words starting with n

• 5-letter words starting with e

• 5-letter words starting with v

• 5-letter words starting with h

• 5-letter words starting with d

5-letter words in the middle

• 5-letter words in the middle h

• 5-letter words in the middle m

• 5-letter words in the middle s

• 5-letter words in the middle f

• 5-letter words in the middle s

5-letter words ending with

• 5-letter words ending with a

• 5-letter words ending with i

• 5-letter words ending with e

• 5-letter words ending with h

• 5-letter words ending with c

5-letter words excluding

• 5-letter words excluding e

• 5-letter words excluding i

• 5-letter words excluding o

• 5-letter words excluding v

• 5-letter words excluding e