Record Eveything Printed on Your Terminal Screen.

$ script -a <filename>

Now start doing stuff and "everything" is appended to <filename>.
For example

$ script installation

$ (command)

$ (result)

$ ...

$ ...

$ (command)

$ (result)

$ exit

The whole session log is in the installation file that you can later
read and/or cleanup and add to a documentation.

This command can also be used to redirect the contents to another user,
but you must be root to do this.

Step 1 - find out what pts they are using.

$ w

Step 2 - Run script on that pts. After running this command below
everything you type will appear on their screen.

$ script /dev/pts/4


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to this tip.