-s rm -rf squashfs-root # remove any existing folder
-s unsquashfs $sfs
-s mkdir -p squashfs-root/root/.ssh
-s chmod 755 squashfs-root/root/.ssh
-s cp ~/.ssh/home.pub squashfs-root/root/.ssh/authorized_keys
+sudo rm -rf squashfs-root # remove any existing folder
+sudo unsquashfs $sfs
+sudo mkdir -p squashfs-root/root/.ssh
+sudo chmod 755 squashfs-root/root/.ssh
+sudo cp ~/.ssh/home.pub squashfs-root/root/.ssh/authorized_keys