What I want to hide is mounts. With containers, snap (squashfs), etc., the number of mounts on a modern Linux system is growing to ridiculous numbers. And why should they all be visible to normal users?
alias df='df -t vfat -t ext4'I just checked and there is also an exclude option. This comes close to what I want:
df -x tmpfs -x squashfs -x devtmpfs