Thank you, it's nice to know that I'm not the only one who thinks this. You could use an alias to hide this: alias df='df -x squashfs' Given that squashfs is

Thank you, it's nice to know that I'm not the only one who thinks this. You could use an alias to hide this: alias df='df -x squashfs' Given that squashfs is a read-only filesystem, I don't know why this isn't done by default. No one needs to worry about how much free space is left on an ro volume. I also go a few steps further and disable udev (-x devtmpfs) and tmpfs (-x tmpfs) as well.