Is it possible to list all available commands in the terminal?

[Dawnshadow]

In the terminal, is it possible to output a list of all available commands (similar to what happens when you type a letter then push tab but for the whole alphabet)? Even better, is there a way to do this and export it to a text file automatically? I found a list of terminal commands, however, I know that I installed a few packages that make other things work at the command line (i.e, typing 'nethack' brings up Nethack) and I didn't think to write them all down....

Thank you.

[calx]

Just press TAB twice..

[mlind]

That's pretty huge list, just by hitting TAB key twice before writing any characters you get over 2000 hits.

Listing contents of /bin, /sbin, /usr/bin, /usr/sbin, /usr/local/bin, /usr/local/sbin (and possibly ~/bin, ~/sbin) shows you all the scripts and binaries you can execute (as root at least).

One of the most useful things is to learn use manual pages, and using search while browsing the manual. For nethack, you would type man nethack or for bried help: nethack --help.
To search a manual page, type '/' and then type in your search string. Use 'n' to find next search result, 'N' for previous.

[Dawnshadow]

Thanks. I knew about "man whatever," but not the other uses, nor the brief help option. Useful, as that's what I intended to do with the listing-- a DIY reference to everything by man-ing all the non-obvious ones. (I wonder if "man man" works.... [and I'll be trying it as soon as I'm done with this post, so no need to tell me.])

(Hitting tab *before* typing... who'd've thought....)

[John.Michael.Kane]

These may be of some use.

The Linux Terminal - a Beginners' Bash
An A-Z Index of the Linux BASH command line
Linux Shortcuts and Commands
Some Useful Linux Commands
LINUX ADMINISTRATOR GUIDE