And get a list of characters in a font like this:

So the correct command to use is findmnt, which is itself part of the util-linux package and, according to the manual: is able to search in /etc/fstab, /etc/mtab or /proc/self/mountinfo

If there are some pipe between these commands, you need to flush stdout. for example: script -q /dev/null commands... | ruby -ne 'print "....\n";STDOUT.flush'

Job control is what happens when you press ^Z to suspend a program, or when you start a program in the background using &

For example, on the terminal I'm using, the right arrow outputs ^[[C. You can see what sequence your terminal outputs by pressing Ctrl-V Right Arrow. The same is true for other cursor-control keys such as Page Up and End.

As usual with almost any command, if you want a normal argument that starts with a - to not be interpreted as a switch, precede it with --

rsync --info=progress2

In Bash you quite often need to check to see if a variable has been set or has a value other than an empty string. This can be done using the -n or -z string comparison operators.