From ba373fc2dcc2aed8ada5676048fbbfd68d3f6eca Mon Sep 17 00:00:00 2001
From: Ives van der Flaas <ives.vdf@gmail.com>
Date: Sun, 10 Jul 2022 11:51:11 +0200
Subject: [PATCH] Add support for PhotonOS's tdnf. (#411)

Example output:

root [ /home/ives ]# tdnf -q check-update
Linux-PAM.x86_64                             1.4.0-5.ph4          photon-updates
cloud-init.noarch                           22.2.2-1.ph4          photon-updates
curl.x86_64                                 7.83.1-2.ph4          photon-updates
curl-libs.x86_64                            7.83.1-2.ph4          photon-updates
openssl.x86_64                               3.0.3-3.ph4          photon-updates

So a simple line count should suffice. Output of the script:

root [ /home/ives ]# /bin/docker-osupdate
5
---
 snmp/osupdate | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/snmp/osupdate b/snmp/osupdate
index 4a9b568..87e1687 100755
--- a/snmp/osupdate
+++ b/snmp/osupdate
@@ -20,6 +20,8 @@ BIN_YUM='/usr/bin/env yum'
 CMD_YUM='-q check-update'
 BIN_DNF='/usr/bin/env dnf'
 CMD_DNF='-q check-update'
+BIN_TDNF='/usr/bin/env tdnf'
+CMD_TDNF='-q check-update'
 BIN_APT='/usr/bin/env apt-get'
 CMD_APT='-qq -s upgrade'
 BIN_PACMAN='/usr/bin/env pacman'
@@ -51,6 +53,15 @@ elif command -v dnf &>/dev/null ; then
     else
         echo "0";
     fi
+elif command -v tdnf &>/dev/null ; then
+    # PhotonOS
+    # shellcheck disable=SC2086
+    UPDATES=$($BIN_TDNF $CMD_TDNF | $BIN_WC $CMD_WC)
+    if [ "$UPDATES" -ge 1 ]; then
+        echo "$UPDATES";
+    else
+        echo "0";
+    fi
 elif command -v pacman &>/dev/null ; then
     # Arch
     # calling pacman -Sup does not refresh the package list from the mirrors,