DEV: tool to run kinit/aklog for you if needed (#147)

scripts/kinit_helper

@@ -0,0 +1,41 @@
+#!/bin/bash
+
+function kauth {
+    # If token doesn't exist, create it (will query for password)
+    if ! klist -s
+    then
+	while ! kinit
+	do
+            :
+	done
+    fi
+}
+
+function afsauth {
+    # afs needs kerberos token
+    kauth
+    # only available on psbuild servers
+    if [[ $(hostname) != psbuild-rhel* ]]
+    then
+        echo "You must be on psbuild to create afs tokens"
+	exit
+    fi
+
+    # need to be in g-pcds afs grup
+    if ! pts membership g-pcds 2>&1 | grep -q "$(whoami)"
+    then
+        echo "You do not have permission to use afs. See https://confluence.slac.stanford.edu/display/PCDS/Onboarding+Staff+Members"
+        exit
+    fi
+
+    # If token doesn't exist, create it
+    if ! tokens | grep -q $UID
+    then	
+        aklog
+    fi
+}
+
+# if name == '__main__':
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    afsauth
+fi