I'm having trouble with SetDirectory. Practically, I need to get the following code working:
SetDirectory[StringJoin[NotebookDirectory, "..\\", "txt_Files\\"]]; << "2_Vectors_Linear_Combinations.txt";
where the notebook that is running is in a directory, /home/name/Mathematica/project, whose parent directory contains the map txt_Files which contains 2_Vectors_Linear_Combinations.txt. It seems to me that the code is perfectly suited for exactly this situation (I'm trying to run code I did not write, but the map/file structure should be the same and I'm pretty sure the original can't have been this bugged.). Yet the output is:
"Cannot set current directory to \ "/home/name/Mathematica/project/..\\txt_Files \\ "
There was a mistake in my question. However, it speaks to the intelligence of the answerers that the question still got interpreted correctly and answered correctly. I corrected the question so that it really matches the anwsers.