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#!/usr/bin/env python3

import os
import requests
import json
import tenacity

# GLOBAL API URL / HEADER
CUSTOM_API = os.environ['CUSTOM_API']
DATA_API = os.environ['DATA_API']

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Recreate a folder:
folder = /path/N_123456_01of05
root = /path/N_123456_01of03/scan01/2048x1560
dpx_path = /path/N_123456_01of03

This command returns:
new_folder = os.path.join(folder2, os.path.relpath(root, dpx_path))
new_folder = /path/N_123456_01of05/scan01/2048x1560

os.path.relpath() returns the remainder of the first argument when the second is removed.

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Git terminal shortcuts for Linux
[Part borrowed from cferdinandi - https://gist.github.com/cferdinandi/ef665330286fd5d7127d]


### Most used
cd into server repository you want to update
git init
git remote add upstream <upstream github url>	      # Add original as upstream
git merge upstream/main                             # Replaces local server version with GitHub repository
git log                                             # Update of recent changes

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# Switch between bash / zsh in Terminal:
  chsh -s /bin/bash

Search in files for a string match, case ignored
  grep -iRI "String to match"

nano <scriptname>.sh (or launch with nano, and ctrl + s to save later)
  GNU nano, emulates a text editor and allows editing/writing of bash scripts.
  Shortcuts:
  ctrl + k - cut text

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watch -n 4 'date ; echo ; free'
  Monitoring memory on a Linux system

sudo apt install ubuntu-desktop-minimal
  Install Ubuntu GNOME Desktop Minimal (ubuntu-desktop-minimal package)
  Ubuntu GNOME Desktop Minimal is a flavor of Ubuntu GNOME that is smaller and
  lighter than the full Ubuntu GNOME Desktop. It uses a slimmed-down software selection.
  The purpose of this flavor is to provide a smaller, lighter system to those users
  who have older hardware or who want a more minimal system.
  On a fresh Ubuntu server install, it will take about ~800MB space.

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IN NO PARTICULAR ORDER, YET.

sudo reboot
  Useful if your workstation hangs, as long as you can access a terminal.
  
gnome-session-quit
  Log out of the workstation
  
gnome-screenshot -a
  Drag/drop screenshot area (linux)

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Appendix N. Converting DOS Batch Files to Shell Scripts
Credit the Linux Documentation Project - https://www.tldp.org/LDP/abs/html/dosbatch.html

Quite a number of programmers learned scripting on a PC running DOS. Even the crippled DOS batch file language allowed writing some fairly powerful scripts and applications, though they often required extensive kludges and workarounds. Occasionally, the need still arises to convert an old DOS batch file to a UNIX shell script. This is generally not difficult, as DOS batch file operators are only a limited subset of the equivalent shell scripting ones.

Table N-1. Batch file keywords / variables / operators, and their shell equivalents

Batch File Operator /	Shell Script Equivalent /	Meaning
%	$	command-line parameter prefix
/	-	command option flag

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MACE SPECIFIC CLI SHORTCUTS


FFMPEG CONVERSIONS

1. SD 4:3 MOV to H264 MOV (gop 1 intraframe):

  ffmpeg -i input.mov -c:v libx264 -pix_fmt yuv420p -flags +ildct -map 0 -aspect 4:3 -g 1 -crf 14 -c:a copy -metadata "copyright=Copyright © 2019 Media Archive for Central England" -metadata "comment=To license this item please contact MACE on 01522 837750 or visit www.macearchive.org" output.mov

2. SD 16:9 MOV to H264 MOV (gop 1 intraframe):

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# Coded by James Wingate, Katherine Frances Nagels and Joanna White

from ffprobe3 import FFProbe
import os
import re
import subprocess
import sys

# The keys are the shortform name for each resolution,
# corresponding to the expected .png watermark file.

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C:\Users\MACE Digital Tech>mediainfo --Details=1 "T:\COMPLETED\DPX BEING PACKAGED\Scan01\25462_01_000000.dpx"
000000000 -------------------------
000000000 ---   DPX, accepted   ---
000000000 -------------------------
000000000 Generic section header (1664 bytes)
000000000  File information (768 bytes)
000000000   Magic number:                         XPDS
000000004   Offset to image data:                 8192 (0x00002000)
000000008   Version number of header format:      V2.0
000000010   Total image file size:                12402688 (0x00BD4000)