Download specified by parameter flutter version, unpack it, put it in a new folder with version name, and symlink it to flutter folder.

gistfile1.txt

#!/bin/bash

if [ -z "$1" ]; then
    echo "Usage: $0 <flutter_version>"
    echo "Example: ./install_flutter.sh 3.32.1"
    exit 1
fi

FLUTTER_VERSION=$1
FLUTTER_DIR="/var/flutter"

cd "$FLUTTER_DIR" || { echo "Cannot cd to $FLUTTER_DIR"; exit 1; }

# Remove previous symbolic link if exists
if [ -L flutter ]; then
    rm flutter
fi

# Download the Flutter SDK
FLUTTER_ARCHIVE="flutter_linux_${FLUTTER_VERSION}-stable.tar.xz"
wget "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/${FLUTTER_ARCHIVE}" || { echo "Download failed"; exit 1; }

# Extract the Flutter SDK
tar -xf "${FLUTTER_ARCHIVE}" -C . || { echo "Extraction failed"; exit 1; }

# Rename extracted folder
mv flutter "flutter_${FLUTTER_VERSION}" || { echo "Rename failed"; exit 1; }

# Create symbolic link
ln -sf "flutter_${FLUTTER_VERSION}" flutter

# Clean up archive file
rm "${FLUTTER_ARCHIVE}"

echo "Flutter ${FLUTTER_VERSION} installed successfully."

# Optional: run flutter doctor
"${FLUTTER_DIR}/flutter/bin/flutter" doctor