update.sh: Fixed running configure.sh only if executable

This reverts commit 39034fbc4d.
Revert because --prune-tags not available on git version 2.11

log/failedIPs.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+grep 'sshd' /var/log/auth.log |
+		grep -P '(not allowed because not listed in|Invalid user|Did not receive identification string from|Unable to negotiate with|Bad protocol version identification|error: maximum authentication attempts exceeded for)' |
+		grep -o -P '(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)' |
+		sort -u

update.sh

@@ -6,15 +6,25 @@ if [ $# -eq 1 ]; then
     cd "$1";
 fi
 
+user=$(stat -c '%U' .);
+
+r() {
+    sudo -u "$user" $@;
+}
+
+git() {
+    r git $@;
+}
+
 PREFIX=release;
 CONF_SCRIPT="configure.sh";
 
-git pull --tags > /dev/null;
+git fetch --tags > /dev/null;
 TAG=$(git tag --list | grep "^$PREFIX-" | sort -r | head -n 1);
 if git verify-tag --raw "$TAG" 2>&1 | grep "TRUST_ULTIMATE" > /dev/null; then
     git checkout -q "$TAG";
-    if [ -f "$CONF_SCRIPT" ]; then
-        ./$CONF_SCRIPT;
+    if [ -x "$CONF_SCRIPT" ]; then
+        r ./$CONF_SCRIPT;
     fi
 else
     echo "Invalid or missing signature for $TAG" >&2;