Memory hacking in Linux

I'm looking for a program that works on Linux that will let me view/modify memory locations, preferably one with a not too cryptic interface. I did try googling but I wasn't sure what to look for, any hints?

>>1

void *p = 0xDEADFACE;
memcpy(p, "LOOK I CAN CHANGE MEMORY LOL", - sizeof 1);