i forgot my fedora linux password ,how can i recover my linux password?

Please use better thread titles----"help" does not tell us anything.

Did you forget your user password, the root password, or both? (If you know the root password, you can simply log in as root, and then reset any other passwords using "passwd <username>".

Normally, you cannot recover your password. But you can set a new one as follows:

Boot into "single-user" mode: When you see the GRUB menu, hit any key to stop the countdown, then hit "e" for edit mode. Select the kernel line, "e" again, and add the word "single" at the end (no quotes). hit return, and then enter "b" to boot.

The computer will come up in a root terminal with no password required. You can then set a new password using:
passwd root
OR
passwd <username>

There's always John the Ripper: http://www.openwall.com/john/
Google has tutorials

I believe that the LQ rules do not allow propagating this kind of information.

Reported for adjudication by the responsible mod.

There's no point either.

If you have access to the passwd file it's just easier to change the password, as suggested above. If you don't, then we are talking about nothing.

Thanks, pixellany, although I did not have malicious intentions. I was merely offering another idea, albeit apparently a bad one. From the unmentionable pages first paragraph:

And please, if LQ gets pwnd in the next few days, feel free to blame me for everything, after all, not just anybody can use google.

I do not question your motives---I taking a cautious posture and saying I really don't know if this is allowed or not.

I don't see any harm in it. It's a tool that has been used for years by admins and has been integrated in lots of security tasks with pam and alikes. It's also distributed with virtually 100% of the available distributions. Not knowing about this tool is in fact what makes the passwords of your system vulnerable because people usually like to use the name of their dogs or children as a password.

However that's just my view. I understand that, when in doubt, it's better to just report to the admins. They are the one that have the mighty powers and know if this is legit or not (regardless of the good intentions of the posters). Legal issues are not my strong point, really.