tree 48a2584696ad3022ed0ca32888647d2b65555531
parent dfc94e0221c0b830e49800e25e15c4ccad281b2c
author Mattias Andrée <maandree@kth.se> 1459293387 +0200
committer sin <sin@2f30.org> 1461189460 +0100

printenv: exit status is 2 on failure

This provides a reliable and portable way to
test whether an environment variable is defined.

(Of course, if you are using glibc you may get
false positives if you include a = in the query.)

Signed-off-by: Mattias Andrée <maandree@kth.se>