install.sh: Use built-in shell functionality instead of awk

If install.sh relies on awk, install.sh malfunctions when run on a device with a limited environment where awk is not available. This patch replaces the use of awk with built-in shell script functionality. Fixes: #3737 Signed-off-by: Joakim Roubert <joakim.roubert@axis.com>

install.sh: Use built-in shell functionality instead of awk
80a15beb · Joakim Roubert · Brad Davidson · dfd4e42e · 80a15beb
Commit 80a15beb authored Jul 30, 2021 by Joakim Roubert Committed by Brad Davidson Aug 04, 2021
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install.sh install.sh +5 -1

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--- a/install.sh
+++ b/install.sh
@@ -617,7 +617,11 @@ getshims() {
 killtree $({ set +x; } 2>/dev/null; getshims; set -x)

 do_unmount_and_remove() {
-    awk -v path="$1" '$2 ~ ("^" path) { print $2 }' /proc/self/mounts | sort -r | xargs -r -t -n 1 sh -c 'umount "$0" && rm -rf "$0"'
+    set +x
+    while read -r _ path _; do
+        case "$path" in $1*) echo "$path" ;; esac
+    done < /proc/self/mounts | sort -r | xargs -r -t -n 1 sh -c 'umount "$0" && rm -rf "$0"'
+    set -x
 }

 do_unmount_and_remove '/run/k3s'