Script to install multiple python package updates at once

pipUpgrade.sh

#!/bin/sh
# pipUpgrade script to install multiple python package updates at once
# Compatible/tested with msys2 on Windows / Linux
#----------
# If you want to use this script in ConEmu with cmd, follow these steps (assuming both msys2 and python are already installed)
# a. Add a MSYS_HOME env variable pointing to C:\MSYS2_INSTALL_DIR\usr
# b. Add 'alias pipUpgrade=%MSYS_HOME%\bin\sh "C:\path\to\pipUpgrade.sh" $1 $2 $3' to Settings/Startup/Environment (without single quotation marks)
# c. Uncomment the following line
#PATH=$PATH:$MSYS_HOME\\bin
# d. Within ConEmu with the cmd shell, simply run 'pipUpgrade'
# e. profit
#----------

#Help screen
if [ "$1" = "--help" ]; then
	echo "pipUpgrade: Install multiple python package updates at once"
	printf "Usage: ./pipUpgrade.sh [--help] [-y] [--pythonVer=[2|3]] [-win]\n\n"
	printf -- "  --help\n	Display this help message\n\n"
	printf -- "  --list-all\n	List all installed packages\n\n"
	printf -- "  --list-outdated\n	List outdated packages\n\n"
	printf -- "  --pythonVer\n	Define python version to use (Linux only unless '-win' is used).\n	Use --pythonVer=2 for python 2.x or --pythonVer=3 for python 3.x.\n\n"
	printf -- "  -y\n	Answer yes to all questions\n\n"
	printf -- "  --win\n	Uses py executable instead of python2 or python3\n"
	exit 0
fi

#Set arguments
YES=0
PYVER=0
WIN=0

if [ "$1" = "-y" ] || [ "$2" = "-y" ] || [ "$3" = "-y" ]; then
	YES=1
fi

if [ "$1" = "--pythonVer=2" ] || [ "$2" = "--pythonVer=2" ] || [ "$3" = "--pythonVer=2" ]; then
	PYVER=2
fi

if [ "$1" = "--pythonVer=3" ] || [ "$2" = "--pythonVer=3" ] || [ "$3" = "--pythonVer=3" ]; then
	PYVER=3
fi

if [ "$1" = "--win" ] || [ "$2" = "--win" ] || [ "$3" = "--win" ]; then
	WIN=1
fi

#List packages
if [ "$1" = "--list-all" ] || [ "$2" = "--list-all" ] || [ "$3" = "--list-all" ]; then
	if [ "$WIN" = 1 ]; then
		case "$PYVER" in
			"2") py -2 -m pip list --format freeze | cut -d = -f 1; break;;
			"3") py -3 -m pip list --format freeze | cut -d = -f 1; break;;
			*)   pip list --format freeze | cut -d = -f 1;;
		esac
	else
		case "$PYVER" in
			"2") python2 -m pip list --format freeze | cut -d = -f 1; break;;
			"3") python3 -m pip list --format freeze | cut -d = -f 1; break;;
			*)   pip list --format freeze | cut -d = -f 1;;
		esac
	fi
	
	exit 0
fi

if [ "$1" = "--list-outdated" ] || [ "$2" = "--list-outdated" ] || [ "$3" = "--list-outdated" ]; then
	if [ "$WIN" = 1 ]; then
		case "$PYVER" in
			"2") py -2 -m pip list --outdated --format freeze | cut -d = -f 1; break;;
			"3") py -3 -m pip list --outdated --format freeze | cut -d = -f 1; break;;
			*)   pip list --outdated --format freeze | cut -d = -f 1;;
		esac
	else
		case "$PYVER" in
			"2") python2 -m pip list --outdated --format freeze | cut -d = -f 1; break;;
			"3") python3 -m pip list --outdated --format freeze | cut -d = -f 1; break;;
			*)   pip list --outdated --format freeze | cut -d = -f 1;;
		esac
	fi
	
	exit 0
fi

#Get package list
echo "Python packages to be upgraded:"

if [ "$WIN" = 1 ]; then
	case "$PYVER" in
		"2") OUTPUT="$(py -2 -m pip list --outdated --format freeze | cut -d = -f 1)"; break;;
		"3") OUTPUT="$(py -3 -m pip list --outdated --format freeze | cut -d = -f 1)"; break;;
		*)   OUTPUT="$(pip list --outdated --format freeze | cut -d = -f 1)";;
	esac
else
	case "$PYVER" in
		"2") OUTPUT="$(python2 -m pip list --outdated --format freeze | cut -d = -f 1)"; break;;
		"3") OUTPUT="$(python3 -m pip list --outdated --format freeze | cut -d = -f 1)"; break;;
		*)   OUTPUT="$(pip list --outdated --format freeze | cut -d = -f 1)";;
	esac
fi

echo "${OUTPUT}"

if [ -z "$OUTPUT" ]; then
	echo "All python packages are up to date. Nothing to do."
	exit 0
fi

if [ "$YES" = 0 ]; then
	printf "\n"
	read -p "Are you sure you want to update these packages? (Y/N): " yn
	case $yn in
		[Yy]*) break;;
		[Nn]*) exit 0;;
		*)     exit 0;;
	esac
fi

#Update packages
printf "\nStarting upgrade:\n"

if [ "$WIN" = 1 ]; then
	case "$PYVER" in
		"2") echo "${OUTPUT}" | xargs py -2 -m pip install --upgrade; break;;
		"3") echo "${OUTPUT}" | xargs py -3 -m pip install --upgrade; break;;
		*)   echo "${OUTPUT}" | xargs pip install --upgrade;;
	esac
else
	case "$PYVER" in
		"2") echo "${OUTPUT}" | xargs python2 -m pip install --upgrade; break;;
		"3") echo "${OUTPUT}" | xargs python3 -m pip install --upgrade; break;;
		*)   echo "${OUTPUT}" | xargs pip install --upgrade;;
	esac
fi