diff --git a/iiab-install b/iiab-install
index 58ac12191..d9d62869f 100755
--- a/iiab-install
+++ b/iiab-install
@@ -54,7 +54,13 @@ fi
 # Verify that a recent enough version of Ansible is installed.  See #449.  The
 # "include:" command was inconsistently implemented prior to Ansible 2.4.x.x
 CURR_ANSIBLE_VER=0
-if type -P ansible ; then
+#if [ $(grep ubuntu /etc/apt/sources.list) ]; then  # FAILS when multiple lines returned, due to single square brackets
+#if grep -q ubuntu /etc/apt/sources.list ; then     # Works: bypasses need for "> /dev/null" thanks to "grep -q" (quiet)
+#if command -v ansible > /dev/null ; then  # Works But Wordy!
+#if [[ $(command -v ansible) ]]; then      # Also Works! $(...) nests more easily than backticks
+#if [[ `which ansible` ]]; then            # "which" misses built-in commands like cd, and is RISKY per https://stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script
+#if [[ `type -P ansible` ]]; then          # "type -P" isn't POSIX compliant; it misses built-in commands like "cd"
+if [[ `command -v ansible` ]]; then        # "command -v" is POSIX compliant; it catches built-in commands like "cd"
     #CURR_ANSIBLE_VER=`ansible --version | head -1 | sed -e 's/.* //'`
     #CURR_ANSIBLE_VER=`ansible --version | head -1 | cut -f 2 -d " "`
     CURR_ANSIBLE_VER=`ansible --version | head -1 | awk '{print $2}'`