3
votes
1answer
44 views

tac command's option creates strange output [comprehension question]

Say I have this file, containing nothing than a b c b a Using tac --separator=a file in BASH [on a Debian based Linux], I get this: # empty line # empty line b ...
11
votes
2answers
217 views

`test` and `[` - different binaries, any difference?

I noticed while answering another question that test and [ are different binaries, but the [ manpage pulls up test's. Besides the requirement for an ending ], is there any difference? If not, why are ...