CopyDir recursively copies a directory tree, attempting to preserve permissions.

CopyFile copies the contents of the file named src to the file named by dst.

FilterOutSCCS is a ReadDirFilter that excludes known VSC or project files.

FilterReadableFiles is a ReadDirFilter that accepts only readable files.

Normalizes an UTF8 byte slice TODO: use it more often troughout all the project (maybe on logger interface?).

Convert a command and argument slice back to a printable string.

Capture into buffer.

Redirect to null.

Show on stdout/stderr as normal.

Show if verbose is set, Ignore otherwise.

FilterOutHiddenFiles is a ReadDirFilter that exclude files with a "." prefix in their name.