stage('Test the 500 log URLs') {
      steps {
        script {
          echo 'Testing the URLs from the 500 error access log...'
                sh '''#!/bin/bash
                    while IFS= read -r line; do
                      URL=`echo $line | awk '{print $2}' | sed 's/http:/https:/' `
                      RESULT=`curl -LI $URL -o /dev/null -w "%{http_code}n" -s | tr -d '[:space:]' `
                      if [[ $RESULT != "200" ]]
                        then
                          echo "$RESULT $URL"
                      fi
                    done < tests/Smoke/logs_testing/500errors.txt
                  '''
        }
      }
    }

URL=`echo $line | awk '{print $2}' | sed 's/http:/https:/' `

RESULT=`curl -LI $URL -o /dev/null -w "%{http_code}n" -s | tr -d '[:space:]' `

line 4: curl: command not found

$ which curl
/usr/somelocation/curl # <- just an example

RESULT=`/usr/somelocation/curl -LI $URL...`

export PATH=$PATH:/usr/somelocation/