Q. How do I view a .1 file?
A. Linux man (manual) files have a .1 suffix and live in /usr/share/man/man1
There are other folders too.
Normally to access a man page you just do:
For example, to get info about the "yes" command:
This the same as doing:
zcat /usr/share/man/man1/yes.1.gz | nroff -man
Since the man pages are compressed you need to uncompress it with zcat.
Then process it into a readable form with nroff.
So now if you run into a .1 file that is not installed -- say part
of a source code package -- you can view it.
nroff -man yes.1