server/gitea: update_gitea expanded arguments for readability

roles/server/gitea/templates/update_gitea.sh

@@ -21,11 +21,11 @@ function as() {
 }
 
 if [ -f "$GITEA_BIN" ]; then
-    installed=$(cd "$GITEA_DIR" && as "$GITEA_BIN" --version | grep -Po "(?<=version )\d+(\.\d+)*(?= )");
+    installed=$(cd "$GITEA_DIR" && as "$GITEA_BIN" --version | grep --only-matching --perl-regexp "(?<=version )\d+(\.\d+)*(?= )");
 else
     installed=0;
 fi
-version=$(curl -s https://blog.gitea.io/index.xml | grep -Po '<title>.*</title>' | grep -Po '\d+(\.\d+)+' | sort -rn | head -n 1);
+version=$(curl --silent https://blog.gitea.io/index.xml | grep --only-matching --perl-regexp '<title>.*</title>' | grep  --only-matching --perl-regexp '\d+(\.\d+)+' | sort --numeric-sort --reverse | head --lines=1);
 address="https://dl.gitea.io/gitea/$version";
 binary="gitea-$version-linux-amd64";
 signature="$binary.asc";
@@ -46,7 +46,7 @@ fi
 cd "$GITEA_DIR";
 
 for a in "$binary" "$signature" "$checksum"; do
-	if ! wget --quiet -O "$a" "$address/$a"; then
+	if ! wget --quiet -output-document="$a" "$address/$a"; then
 		error "Failed to download $a";
 		exit 1;
 	fi
@@ -56,7 +56,7 @@ if ! "$CHECKSUM_APP" --quiet --check "$checksum"; then
 	error "Checksum not correct!";
 	exit 1;
 fi
-if ! (gpg --status-fd 1 --verify "$signature" "$binary" 2>/dev/null | grep -P 'VALIDSIG .* '"$GPG_FINGERPRINT" > /dev/null); then
+if ! (gpg --status-fd 1 --verify "$signature" "$binary" 2>/dev/null | grep --perl-regexp 'VALIDSIG .* '"$GPG_FINGERPRINT" > /dev/null); then
 	error "Signature not valid!";
 	exit 1;
 fi
@@ -65,7 +65,7 @@ rm "$checksum";
 rm "$signature";
 
 mv "$binary" "$GITEA_BIN";
-chmod 0754 "$GITEA_BIN";
+chmod u=rwx,g=rx,o=r "$GITEA_BIN";
 chown root:"$GITEA_USER" "$GITEA_BIN"
 
 if [[ ! "$installed" = "0" ]]; then