[W3F HQ] Script to update and run Polkadot

update_kusama.sh

#!/bin/bash

# This script assumes that Polkadot is cloned in the relative path `polkadot/`
# and the file `run_kusama.sh` (which actually executes the program) is present.
#
# Example usage: `$ ./update_kusama.sh v0.7.15`

print_error () {
    echo -e "\e[41m[!!]\e[0m Please specify a valid git tag"
    echo "Example command:"
    echo "$ ./update_kusama.sh v0.7.15"
    exit 1
}

# Check if the git tag was set as an argument
if [ -z "$1" ]
  then
    print_error
fi

# Pull the newest releases
cd polkadot/
git checkout master
git pull origin master --tags

# Checkout the specified tag, exit if it does not exist
git checkout $1
if [ ! $? -eq 0 ]; then
    echo ""
    print_error
fi

# Finally build and execute
cargo build --release
cd ..
./run_kusama.sh