mjhjmtu

I have a simple script that executes commands on remote host using ssh and EOF

I was trying to do it with a one-liner at command line but I couldn't figure out how to do the EOF outside of a script. is it possible? I spent some time googling and reading HereDocs documentation but it wasn't coming to me

this script works fine - I needed the EOF section in order to run awk remotely via ssh but I usually like to do one-liners for simple stuff:

#!/bin/bash
# it looks up all my hosts with 'db' in the name
# then gets the PID of any rsyncs running as user 'research'
# and pumps them into xargs

getHosts=(`curl --silent "http://assetts.lab/all_hosts" | grep -v ^# | awk -F" " 'print$1'|grep db`)
for BOX in $getHosts[@];do
 echo "$BOX: "
 ssh -T sshUser@$BOX <<"EOF"
ps -ef | egrep "rsync|iasync" | awk -F" " 'if ($1 ~ "research") print $2'|sudo xargs -i ps -fp ''
#ps -ef | egrep "rsync|iasync" | awk -F" " 'if ($1 ~ "research") print $2'|sudo xargs -i kill ''
EOF
 echo
done

i'm probably missing something simple...
anyway thanks for any suggestions :)

The EOF bash feature is basically for use as you do in your example, ie in order to send multiple lines of text to another command.

If you want this as a one-liner, the EOF has to go.

In order to execute a command on a remote host using ssh, all you need to do is:

ssh host command

For example:

ssh host "ls -alh"

will run the command on host and return the output on the console.

Your example code could be rewritten in a one line if you take note of how you use the quotation marks, something like this:

ssh host "ps -ef | egrep 'rsync|iasync' | awk -F" " 'if ($1 ~ "research") print $2'"