verbose shell output in kernel version step

Author: gsingh93

.github/workflows/build2.yml

@@ -77,18 +77,24 @@ jobs:
       id: version
       shell: bash
       run: |
+        set -x
+
         LINUX_URL=https://cdn.kernel.org/pub/linux/kernel
         VERSION="${{ inputs.version }}"
         first_char=${VERSION:0:1}
         last_char=${VERSION: -1:1}
         if [ $last_char == y ]; then
           major_minor=${VERSION: 0:-1}
-          VERSION=$(curl -s $LINUX_URL/v${first_char}.x/ \
-            | sed -e 's/<[^>]*>//g' \
-            | grep -oP "linux-${major_minor}[0-9]+" \
-            | sort -r -V \
-            | head -n1 \
-            | cut -d '-' -f2)
+
+          # We do this in multiple steps instead of a chain of pipes to make debugging easier
+          TMP=$(curl -s $LINUX_URL/v${first_char}.x/)
+          TMP=$(echo $TMP | sed -e 's/<[^>]*>//g')
+          TMP=$(echo $TMP | grep -oP "linux-${major_minor}[0-9]+")
+          TMP=$(echo $TMP | sort -r -V)
+          TMP=$(echo $TMP | head -n1)
+          TMP=$(echo $TMP | cut -d '-' -f2)
+
+          VERSION=$TMP
         fi
 
         echo "VERSION=$VERSION" >> $GITHUB_OUTPUT