Useful tip, on linux (not sure about other *nixes) you can view the ascii table by opening its manpage:
man ascii
It's been useful to me more than once every year, mostly to know about shell escape codes and when doing weird character ranges in regex and C.
It can be a bit confusing, but the gist is that you have 2 chars being show in each line, I would prefer a view where you see the same char with shift and/or ctrl flags, but you can only ask so much
The reason I know this is because in 2004 I was squatting in an apartment with no TV and no internet. So each day after work I would go home and just read manpages for fun.
Ended up learning ipfw through the firewall manpage on FreeBSD, and using my skills to setup and manage an IPFW at work.
It's amazing how much you get done with no TV and no internet. Also played a lot of nethack.
I used to do that until the experience became degraded enough, reflecting the general state of the web, that I took the time to look for a better way and found `man ascii`.
Not sure why anyone would downvote your comment, because it is a genuine question
`man` is basically manual documentation on anything on your system, not only commands. Most commands do have a manpage for them, but it is not a requirement. The argument of the command is just the file name for the document
Indeed `man ascii` (on MacOS but the same for Linux for the most part) shows the manpage for 'ASCII(7)' - the '7' denotes the section of the manual the manpage is from. If you use `man man`, you can see the section numbers and names, e.g. Section 1 General Commands, 5 File Formats, 7 Misc Info, 8 System Manager's Manual. If a word, e.g. 'crontab', has multiple entries in different sections, then you might have to specify the section you want, e.g.`man crontab` shows the crontab(1) (General Command) and use `man -s 5 crontab` to see the crontab(5) (File Format). `apropos crontab` will show entries related to crontab, i.e. cron(8), crontab(1), and crontab(5).
It can be a bit confusing, but the gist is that you have 2 chars being show in each line, I would prefer a view where you see the same char with shift and/or ctrl flags, but you can only ask so much