When executing this bash script, it only shows my local path.
ssh ${REMOTE_HOST} 'bash -s' <<EOL
set -e
source ~/.profile
echo $PATH
# Commands here don't work because $PATH is not set properly.
# How can I see what $PATH is set to here?
EOL
How can I view the remote value of $PATH to debug this?
The $PATH is getting expanded prior to running on the remote server.
Say I run these commands from a system called skinner.bubba.net.
[root@skinner ~]# ssh mulder 'bash -s' <<EOL
> echo $HOSTNAME
> hostname
> EOL
skinner.bubba.net
mulder.bubba.net
By moving the single quote so that the echo $HOSTNAME is inside it, you can guard the variable from getting expanded by skinner's Bash shell.
[root@skinner ~]# ssh mulder 'bash -s <<EOL
> echo $HOSTNAME
> hostname
> EOL'
mulder.bubba.net
mulder.bubba.net
The other method would be to escape the $HOSTNAME with a slash, which tells Bash you want to send a literal dollar sign.
[root@skinner ~]# ssh mulder 'bash -s' <<EOL
> echo \$HOSTNAME
> hostname
> EOL
mulder.bubba.net
mulder.bubba.net
