如何从脚本（csh / tcsh）调用ssh？

Question

I have different servers with different IPs with I can ssh in any servers and get my database intact (I don't know how, I am just an user). I have written one script to move from one server to other server using ssh in the same directory where I was in first server.

Here you can see final command that if I type will work:

ssh -X usr@192.168.1.xyz -t 'cd /home/usr/regression && exec /bin/csh'

Now here a part of small script:

set path = $PWD  
set user = $1  

set cmd = "ssh -X $user@192.168.$ip3.$ip4 -t 'cd $path && exec $SHELL'"
echo $cmd;
$cmd;

Since It is csh/tcsh script I just want to run

$cmd

command but it give this message:

ssh: Command not found.

While If I copy,paste and run the final command that I am getting with:

echo "$cmd" 

Like :

ssh -X usr@192.168.1.xyz -t 'cd /home/usr/regression && exec /bin/csh'

Then It works fine.

Answer 1

The path variable in csh is a magic array tied to the PATH environment variable. When you changed it, you lost your original PATH . Not just ssh, but all external commands will fail after that because none of them can be found, unless they are in $PWD which is your new PATH .

Call your path variable something else.