From 356828109e2b1e544fe3a70086387f8b1a4f59b6 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Fri, 25 Sep 2020 12:06:49 +0300
Subject: add: delete-files

---
 delete-files | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100755 delete-files

diff --git a/delete-files b/delete-files
new file mode 100755
index 0000000..0560725
--- /dev/null
+++ b/delete-files
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+set -eu -o pipefail
+
+dev="$1"
+dir="$2"
+img="$3"
+
+echo
+echo "unmount $dev"
+sudo umount  "$dev" || true
+
+echo
+echo "unpack $img to $dev"
+pv "$img" | unxz | sudo dd of="$dev"
+
+started="$(date +%s)"
+
+echo
+echo "mount $dev on $dir"
+sudo mount "$dev" "$dir"
+
+echo
+echo "delete all files under $dir"
+find "$dir" -mindepth 1 -delete
+
+echo
+echo "unmount $dev"
+sudo umount "$dev"
+
+ended="$(date +%s)"
+duration=$(("$ended" - "$started"))
+
+echo
+echo "seconds to delete: $duration"
+
+echo
+echo "done"
-- 
cgit v1.2.1