Grep remote multiple hosts output to local server

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[Solved]Grep remote multiple hosts output to local server

Hello all,
i'm trying to create a report by greping a pattern on multiple remote hosts and creta a simple report,
actually i did this, is ther any better way to do this.
for host in `cat RemoteHosts`
  ssh $host -C 'hostname 2>&1; grep ERROR /var/log/WebServer.log.2019-09-21 | wc -l' >> output
# joining each two lines together with single tab between
sed 'N;s/\n/ /' output > JoinedLinesReport.csv
#removing old output file
rm -f output

The report with the above script is the following,
server1   1345
server2 2345

Is there any way to create it like this?
HostName Count
server1	        1345
server2	        2345

EDIT: added a new sed to add the line i need.
Thanks any way.
sed -i '1s/^/HostName Count\n/'  JoinedLinesReport.csv

Last edited by Scrutinizer; 09-21-2019 at 03:28 PM.. Reason: Added code tags ....
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