Check if a file is really a file, whether a string contains anything, and whether you can run a program with these vital patterns.

the model is a a small convolutional neural network with two convolution/maxpool and 2 linear layers. the input is a square 500x500 2d array (because all pixels in my datase images are whether (0,0,0) ...

It is no secret that we often use and abuse bash to write things that ought to be in a different language. But bash does have its attractions. In the modern world, it is practically everywhere. It ...