mount-sdb1-on-mnt-build

#!/bin/sh
#20220131

if [ -d /mnt/build/lost+found ];then
 echo "ERROR already mounted."
 exit
fi
if [ -d /mnt/sdb1/lost+found ];then
 echo 'ERROR sdb1 must not be mounted.'
 exit
fi
#SUBS="$(ls /mnt/build | head -n 1)"
#if [ "$SUBS" ];then
# echo "ERROR: /mnt/build must be empty."
# exit
#fi

mount -t ext4 /dev/sdb1 /mnt/build
if [ $? -eq 0 ];then
 echo "OK done"
else
 echo "ERROR failed to mount."
fi