From: Alex Dehnert <adehnert@mit.edu>
Date: Fri, 17 May 2013 20:42:53 +0000 (-0400)
Subject: krbroot: Handle unset ATHENA_USER
X-Git-Url: https://www.dehnerts.com/gitweb/?p=user%2Falex%2Fsoftware%2Fmy-snippets.git;a=commitdiff_plain;h=954fd9e0def45e1c40cac62ba7174916fcd0da69

krbroot: Handle unset ATHENA_USER
---

diff --git a/krbroot b/krbroot
index 37e0429..e1d7f9d 100755
--- a/krbroot
+++ b/krbroot
@@ -4,6 +4,7 @@ set -euf
 
 usage="Usage: $0 [-i instance] [-p principal] [-a addrend] subcommand [args]"
 
+ATHENA_USER=${ATHENA_USER:-$USER}
 principal="$ATHENA_USER/root@ATHENA.MIT.EDU"
 addrend="root"
 while getopts "i:p:a:h" options; do