macOS Command Line Zip Secure Extract Script using 7z

secure_extract.sh

#!/bin/bash

# Secure Extract Script using 7z
# Requires: 7z (7-Zip) is not installed. Download it from 7-zip.org

# Exit on error or undefined variable
set -euo pipefail

# Specify the folder location of the 7zip executable file
ZIPLOCATION=$HOME"/Downloads/7Zip"

# Usage check
if ! command -v $ZIPLOCATION/7zz &> /dev/null; then
	echo "❌ 7z (7-Zip) is not installed. Download it from 7-zip.org"
	exit 1
fi

# Input check
if [ $# -lt 1 ]; then
	echo "❌ No paramaters specified"
	echo "Usage: $0 /path/to/archive.7z"
	exit 1
fi

ARCHIVE="$1"

# Check file exists and is a regular file
if [ ! -f "$ARCHIVE" ]; then
	echo "❌ File not found or not a regular file: $ARCHIVE"
	exit 1
fi

# Prompt for password (hidden input)
read -rsp "🔓 Enter password to decrypt: " PASSWORD
echo

# Extract to a directory with same name as archive (without .7z)
OUTPUT_DIR="${ARCHIVE%.7z}_extracted"

# Create output directory if it doesn’t exist
mkdir -p "$OUTPUT_DIR"

# Run extraction securely
if $ZIPLOCATION/7zz x -p"$PASSWORD" "$ARCHIVE" -o"$OUTPUT_DIR"; then
	echo "✅ Extraction complete. Files saved to: $OUTPUT_DIR"
else
	echo "❌ Extraction failed. Possibly wrong password or corrupted archive."
	exit 1
fi

# Unset password variable
unset PASSWORD