diff --git a/integration/scripts/files/elements/guest-agent/install.d/guest-agent-source-install/guest-agent.conf b/integration/scripts/files/elements/guest-agent/install.d/guest-agent-source-install/guest-agent.conf
index 4420e105ed..51bd0ab41c 100644
--- a/integration/scripts/files/elements/guest-agent/install.d/guest-agent-source-install/guest-agent.conf
+++ b/integration/scripts/files/elements/guest-agent/install.d/guest-agent-source-install/guest-agent.conf
@@ -9,7 +9,7 @@ respawn limit 2 2
 exec guest-agent --config-file /etc/trove/guest-agent.conf
 
 post-start script
-    PID=`status guest-agent | egrep -oi '([0-9]+)$' | head -n1`
+    PID=`status guest-agent | grep -Eoi '([0-9]+)$' | head -n1`
     echo $PID > /var/run/guest-agent.pid
 end script
 
diff --git a/integration/scripts/functions b/integration/scripts/functions
index 2f50bdc5d1..573c71d754 100644
--- a/integration/scripts/functions
+++ b/integration/scripts/functions
@@ -17,7 +17,7 @@ function git_clone {
     GIT_DEST=$2
     GIT_BRANCH=$3
 
-    if echo $GIT_BRANCH | egrep -q "^refs"; then
+    if echo $GIT_BRANCH | grep -E "^refs"; then
         # If our branch name is a gerrit style refs/changes/...
         if [[ ! -d $GIT_DEST ]]; then
             git_timed clone $GIT_REMOTE $GIT_DEST
diff --git a/integration/scripts/trovestack b/integration/scripts/trovestack
index 9729689df2..885b7b1326 100755
--- a/integration/scripts/trovestack
+++ b/integration/scripts/trovestack
@@ -553,7 +553,7 @@ function cmd_start_deps() {
         sudo losetup -f --show ${VOLUME_BACKING_FILE}
     fi
 
-    if ! egrep -q ${SWIFT_DATA_DIR}/drives/sdb1 /proc/mounts; then
+    if ! grep -E ${SWIFT_DATA_DIR}/drives/sdb1 /proc/mounts; then
         exclaim "Re-mounting Swift Disk Image"
         sudo mount -t xfs -o loop,noatime,nodiratime,nobarrier,logbufs=8  ${SWIFT_DISK_IMAGE} ${SWIFT_DATA_DIR}/drives/sdb1 || true
     fi