Jenkins sh : wait for wget download to finish

I have a hard time to force wget command to wait until download finish's, problem occurs inside Jenkins sh '''script place '''. I have wrote the script in .sh file, where it runs without any issues, but after moving it into Jenkins other command in Jenkins executes before the download completes. script I'm using looks like this sh ''' ssh -i "${keyfile}" -v -o StrictHostKeyChecking=no myuser@myVM << ENDSSH cd /toFolder ls -l echo if [ -f *.zip ] then echo "zip file already exists. Aborting" exit 1 fi wget ${URL} sleep 1 export ZIP_FILENAME=ls *.zip echo run: deployment.sh -j $ZIP_FILENAME echo deployment.sh -j $ZIP_FILENAME ENDSSH ''' for the sake of pasting this code here I have moved ENDSSH on the last line under deployment script to keep it inside the code block. (I know it should be far left of the script) so my problem is that finding the file name which has to be deployed with deployment.sh is executed before download is completed. Tried to use wait command, as well as sleep, which I do not think is a best way to do it, but wait command does not wait at all and sleep command works from time to time. curl behavior is exactly the same. any advices will be much appreciated, as long as I'm not with enough knowledge in Linux scripting.