Multiline Bash Command in Jenkins Pipeline

Jenkins pipeline multiline script command as variable

you can do it like this. Not with a groovy variable but can be more dynamic with groovy function/method

def reusableScript(message) {
    sh """
      echo Hello World
      echo Hi ${message}
    """
}
pipeline {
    agent any;
    stages {
        stage('01') {
            steps {
                script {
                    reusableScript("From ${env.STAGE_NAME}")
                }
            }
        }
        stage('02') {
            steps {
                script {
                    reusableScript("From ${env.STAGE_NAME}")
                }
            }
        }
    }
}

Multiline bash command in Jenkins pipeline

because <<DATA specifies the end of here-doc <<-DATA suppress leading tabs but not spaces

cat <<-DATA
    hello
<tab>DATA

another option is to add spaces in marker

cat << "    DATA"
    hello
    DATA

How to use bash variables in Jenkins multi-line shell script

Try this:

sh """#!/bin/bash
    set -x    

    for file in *.map; do
        filename="\$(basename "\$file" .map)"
        echo "Uploading \$filename"

        curl  -X POST "${SERVER_URL}/assets/v1/sourcemaps" \
              -F service_name="${SERVICE_NAME}" \
              -F service_version="${revision}" \
              -F bundle_filepath="${main_url}\$filename" \
              -F sourcemap="@\${filename}.map" &
    done
    wait
"""

How can I read Jenkins pipeline variable in multiline shell?

You need to use """ like this:

sh """
    "ssh -o StrictHostKeyChecking=no ${myserver} 'rm -rf temp && mkdir -p temp && mkdir -p real'"
"""

How to set variables in a multi-line shell script within Jenkins Groovy?

You need to change to triple single quotes ''' or escape the dollar \$

Then you'll skip the groovy templating which is what's giving you this issue

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