Resize the filesystem to a size of 40G, displaying a progress bar

Resize an ext2, ext3 or ext4 filesystem.
Does not resize the underlying partition. The filesystem may have to be unmounted first, read the man page for more details.
More information: <https://manned.org/resize2fs>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

resize2fs -p {{/dev/sdXN}} {{40G}}

click the source code to copy install resize2fs on any operating system with command-not-found.com