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There is this problem that’s been bothering me lately.
I’m trying to do the following using rsh or remsh (in HPUX):
#!/bin/sh
rsh myDNS"
DIRECTORY=/tmp/foo1/foo2
echo $DIRECTORY
"
When I try to run the above script, however, I get blank output for $DIRECTORY. Consequently, when this issue is applied to the actual scripts I’m working on, bash claims that it could not find the specified script that I was trying to source.
You’re better off using ssh than using rsh or remsh. rsh and remsh are very insecure – the transmit data in cleartext and are based on IP address authentication.
If you use double quotes like that, $DIRECTORY gets expanded on the initiating host, before rsh/remsh is started.
If you use single quotes (apostrophes) instead, $DIRECTORY should be expanded on the remote host.