1765959331

customscripts/pi_create_image_from_img

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+#!/bin/bash
+set -e # fail on any error
+mountpoint=/mnt/img
+
+if [ -z "$1" ]; then
+    echo "Usage: pi_create_image_from_img path/to/file.img"
+    exit 1
+fi
+
+if [ ! -f "$1" ]; then
+    echo "$1 not found"
+    exit 1
+fi
+
+if [ ! -d "$mountpoint" ]; then
+    echo "$mountpoint not found, creating"
+    sudo mkdir -p "$mountpoint"
+fi
+
+imgpath="$(realpath $1)"
+imgdir="$(dirname $imgpath)"
+xzpath="$imgpath.xz"
+renamepath="${imgpath:0:-4}_$(date -I).img.xz"
+
+echo -e "\nsettings:\n\tmountpoint: $mountpoint\n\timgpath: $imgpath\n\timgdir: $imgdir\n\txzpath: $xzpath\n\trenamepath: $renamepath\n"
+cd "$imgdir"
+
+echo "mapping $imgpath"
+sudo kpartx -av "$imgpath"
+
+echo "mounting $imgpath"
+sudo mount /dev/mapper/loop0p2 "$mountpoint"
+
+cd "$mountpoint"
+echo "now edit the image pwd: $PWD"
+read teeeemp
+
+echo "unmounting $mountpoint"
+sudo umount "$mountpoint"
+
+echo "unmapping $imgpath"
+sudo kpartx -dv "$imgpath"
+
+echo "shrinking $imgpath to $imgpath.xz"
+sudo pishrink -Z -r -v -a "$imgpath"
+
+echo "renaming $xzpath to $renamepath"
+mv "$xzpath" "$renamepath"
+
+# rm "$imgpath"