Removing substring from a string

Hi. I want to remove a substring from a string. If I use the "tr" command, it doesn't seem to to what I want it to:

echo './somestring.dat' | tr -d './'
results in
somestringdat

I want it to remove only occurances of the string './', rather than the individual character. The result should be: somestring.dat

How do I do this?

Thanks,

• Dylan

echo './somestring.dat' | sed 's#\./##g'