A slightly optimizing brainf*ck interpreter in approx. 500 lines of x86-64 assembly (AT&T/GAS). Tested on Arch, Debian 9 & Windows LXSS Ubuntu. Obviously not portable.

$ gcc bf.s -o bf -no-pie 

If the command above doesn't work, try it without the no-pie flag.

$ ./bf path_to_bf_program

Note: No errors will be printed. The interpreter will simply exit with code 1 if something goes wrong (e.g., unbalaced brackets). You can check the exit code using echo $?.