#!/bin/bash
var="Warning message:
* checking for file ‘./DESCRIPTION’ ... OK
* preparing ‘analysis’:
* checking DESCRIPTION meta-information ... OK
* cleaning src
* checking for LF line-endings in source and make files and shell scripts
* checking for empty or unneeded directories
Removed empty directory ‘analysis/.idea/inspectionProfiles’
Removed empty directory ‘analysis/.idea/snapshots’
* creating default NAMESPACE file
* building ‘analysis_0.1.tar.gz’"
 
regex='building ‘([^’]*)’'
 
if [[ "${var}" =~ $regex ]]; then
  pkgname="${BASH_REMATCH[1]}"
  echo "${pkgname}"
else
  echo "sad face"
fi

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