i am new linux user
is there anyplace where i can find all linux commands

Hello and welcome to LinuxQuestions.org,

A good place to start learning about the Linux commands would be these links:
http://www.linuxmanpages.com/
http://linux.die.net/man/
Have fun using Linux.

Kind regards,

Eric

Well, yes, there is. Any packages you have installed on your machine should have MAN commands built into your system (MAN as in MANual).

Good luck!!

You may take a look at The Linux Documentation Project (www.tldp.org). You will find some useful guides there and in particular the GNU/Linux Command-Line Tools Summary for a general overview of the linux commands.

About dot com has a good listing, but I doubt it has all of them. There are oodles of them.

http://linux.about.com/od/commands/l/blcmdl.htm

This is a good tutorial http://rute.2038bug.com/index.html.gz

thanx to everyone for their kind replies

You may find it a good idea to read this also http://linux.oneandoneis2.org/LNW.htm

The O'Reilly book Linux in a Nutshell is a good reference as well.

All Linux commands? You need to note that while the majority of Linux commands are more-or-less consistent across distributions, that doesn't quite apply to all Linux commands.

So, eg for networking you can find slightly different commands on a Debian-style system (eg, the Ubuntus) from a RedHat-style system (eg Fedora). And, of course, the package management commands only apply to the package manager on your system, so using the 'rpm' command, or anything that is built on top of rpm on a Debian system is unlikely to work for you.

So, you need a little care, but the 'man page' solution, suggested earlier has the advantage that it applies to the commands for the system on which you execute 'man', and doesn't include irrelevant stuff and it is for the version that you have installed (sometimes command options change between versions).

I'm particularly fond of 'man -k subject' (eg, 'man -k network') which should give you a quick way in to which man pages are available for commands relevant to a particular subject. And, obviously, you can pipe the output through 'grep' if you want to be more selective (eg, man -k network| grep -i traffic).

Of course, this works with commands installed on your system; if you want to see what additional utilities might be available for easy installation on your system, you need to look in your package manager (usually, there is a search facility available, but the details are particular to the package manager).

Ive just started Googles' Code University myself.

I've just been through the first tutorial which includes basic commands such as, pwd, ls and some flags, cp, how to use a text editor such as nano, rm...etc.

Good Luck!

welcome to linux..... have fun...

See the tutorials in my sig.