1. file_prefix_changing.sh: Used for replacing partial file name prefix.
2. remove_range_of_lines_from_txt.txt: Using Vim to remove lines[range of line] from large text file using bash.
3. Invert_color: Invert(White -> Black, Black -> White), .png from folder in to out.
4. python_subprocess_communication: demo parent-child message passing
5. flask.py contains some template code for flask app.
👍 Looks great - off the shelf code !!!