Fix shellcheck v0.4.6 warnings

Resolve new warnings reported after upgrading to shellcheck
version 0.4.6.  This patch contains no functional changes.

* egrep is non-standard and deprecated. Use grep -E instead. [SC2196]
* Check exit code directly with e.g. 'if mycmd;', not indirectly
  with $?.  [SC2181]  Suppressed.

Reviewed-by: George Melikov <[email protected]>
Reviewed-by: Giuseppe Di Natale <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #7040 

0 files changed, 0 insertions, 0 deletions