update-agent-properties.bash

#!/usr/bin/env bash

function check_access () {
    host=$1; shift
    port=$1; shift

    nc -zw 1 $host $port > /dev/null && echo yes || echo no
}

function set_property () {
    filename=$1; shift
    key=$1; shift
    value=$1; shift

    escaped_key=`echo $key | sed 's/\./\\\\./g'`
    key_regex="^$escaped_key[ :=].*$"
    new_value="$key = $value"

    if grep -q "$key_regex" "$filename"; then
        echo "Updating property '$key'"
        sed -i '' -e "s/$key_regex/$new_value/g" $filename
    else
        echo "Creating property '$key'"
        echo "$new_value" >> $filename
    fi
}

filename="test.properties"

set_property $filename "serp.agent.npm.version" `npm -v`
set_property $filename "serp.agent.node.version" `node -v`