In Konsole Shell --> Edit --> I've press Reset & Clear Terminal. After that I can't execute any commands like cd, ls, or anything else.
I also can't see the line with my username.

Help please.

It sounds like the Konsole config file is messed up. The konsole config file is at /home/user/.kde/share/apps/konsole. Take a look at the console config file and see if you can see what the problem is or you could post it here for other people to take a look at.

Most distributions keep a default .kde file tree in /etc. You could possibly find the default konsole config in /etc and copy it to /home/user/.kde/share/apps/konsole to restore the config to the defaults.

find /etc -iname "*konsole*"

If you copy the config file as root you will also have to change to ownership to user:groupname because the copy will set ownership to root:root.

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Steve Stites

which distribution are you using. Most of them have package managers now. You could completely remove (which removes associated config file) konsole and reinstall it. This would reset the config file if you can't located the old one and copy it to the regular place.