1 files changed, 91 insertions, 0 deletions
diff --git a/check-kernel.in b/check-kernel.in
new file mode 100644
index 0000000..2354345
--- /dev/null
+++ b/check-kernel.in
@@ -0,0 +1,91 @@
+#!/bin/sh
+
+# check-kernel #VERSION#
+
+verwendung() {
+  >&2 echo 'check-kernel checks if the installed kernel is currently running'
+  >&2 echo ''
+  >&2 echo 'Usage: sendmailadvanced [OPTIONS]'
+  >&2 echo '  -r,--reboot     reboot system if installed kernel is not yet running'
+  >&2 echo \
+'#HELPTEXT#    #'
+  exit 1
+}
+
+eval set -- "$(
+  getopt -o eh:i:st \
+    --long encrypt \
+    --long help \
+    --long version \
+    -n "$(basename "$0")" -- "$@" \
+    || echo verwendung
+)"
+
+reboot=false
+while true; do
+  case "$1" in
+    -r|--reboot)
+      shift
+      reboot=true
+    ;;
+    --help)
+      verwendung 0
+      ;;
+    --version)
+      echo '#VERSION#'
+      exit 0
+      ;;
+    --)
+      shift
+      break
+    ;;
+    *)
+      >&2 echo "FEHLER: Verstehe Option \"$1\" doch nicht! Ich beende."
+      verwendung
+    ;;
+  esac
+  shift
+done
+
+
+if which pacman >/dev/null 2>&1; then
+  # arch linux
+  running=$(
+    uname -r | \
+      sed '
+        s|-ARCH$||
+      '
+  )
+  installed=$(
+    pacman -Q linux | \
+      cut -d' ' -f2
+  )
+elif which apt >/dev/null 2>&1; then
+  # debian
+  running=$(
+    uname -r
+  )
+  installed=$(
+    dpkg-query -W 'linux-image-*-?86' | \
+      cut -f1 | \
+      sed '
+        s|^linux-image-||
+      ' | \
+      sort -V | \
+      tail -n1
+  )
+else
+  >&2 printf 'Cannot determin installed kernel.\n'
+  exit 2
+fi
+
+if [ "${running}" = "${installed}" ]; then
+  >&2 printf 'The installed kernel (%s) is currently running.\n' \
+    "${installed}"
+  exit 0
+else
+  >&2 printf 'The installed (%s) and running kernel (%s) differ.\n' \
+    "${installed}" \
+    "${running}"
+  exit 1
+fi