termux-backup-script

#!/bin/sh

# Set gzip compression level
export GZIP='-1'

# Default output directory
OUTPUT_DIR="$HOME"


help() {
	echo -e 'Open a video link on kodi server using youtube-dl\n'
	echo -e "Usage: $0 [-o OUTPUT_DIR]\n"
	echo 'Options:'
	echo -e "-o OUTPUT_DIR\tOutput directory to create the backup file in (default is $OUTPUT_DIR)"
	echo -e '-h\tDisplay this help message'
	exit 0
}

while getopts ":o:h" OPT; do
	case $OPT in
		o)
			OUTPUT_DIR=$OPTARG;;
		h)
			help;;
		\?)
			echo "Invalid option: -$OPTARG" >&2
			help;;
	esac
done

# Name of the backup
BACKUP_FILE="${OUTPUT_DIR}/termux_backup_$(date +%Y-%m-%d).tar.gz"

if [ -f "$HOME/$NAME" ]; then
	echo "File $NAME already exists" >&2
	exit 1
fi

# Save list of apt packages
if apt-mark showmanual > "$HOME/aptlist.txt" 2>/dev/null; then
	echo 'Successfully fetched a list of manually installed apt packages'
else
	echo 'Error occured while fetching a list of manually installed apt packages' >&2
	exit 1
fi

# Save list of pip packages
if pip list > "$HOME/piplist.txt" 2>/dev/null; then
	echo 'Successfully fetched a list of manually installed pip packages'
else
	echo 'Error occured while fetching a list of manually installed pip packages' >&2
	exit 1
fi

# Create the backup
if tar -zcvf "$BACKUP_FILE" "$HOME/../home" "$HOME/../usr"; then
	echo "Tar archive $BACKUP_FILE was created successfully"
	
	# The package lists are now stored in the backup file and not needed anymore
	rm "$HOME/aptlist.txt" "$HOME/piplist.txt"
	
	exit 0
else
	echo "Error creating tar archive $BACKUP_FILE" >&2
	exit 1
fi