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Top Forums Shell Programming and Scripting Cannot create variables via ssh on remote machine Post 302576253 by black_fender on Thursday 24th of November 2011 07:54:40 AM
Old 11-24-2011
I have a new problem related with the one above (we still have same background info from the 1st post) :
Code:
h3mis391_telnet=h3mis391bin
ssh -q user@station " i=h3mis391
> eval value=\$`echo \${i}_telnet`
> echo value is $value
> "
value is

So the variable $value is not set.
I've also tried the remote eval command this way:
Code:
eval value=$`echo ${i}_telnet`
eval value=$`echo \${i}_telnet`

With the same result.
So I basically want to create (while I'm in a remote ssh session) the variable value. $value should take the content of the variable h3mis391_telnet (which was set in the initial session, before ssh).But I need to call the variable h3mis391_telnet using variable $i (set after ssh). I wanna use the value of $i variable to create the name of the $h3mis391_telnet, and this name I wanna use in order to call the variable in the eval command.
The idea it;s a bit complicated but the code shouldn;t be hard to understand.

Any help regarding the suntax I use or different approach to accomplish what I want?

---------- Post updated at 05:38 AM ---------- Previous update was at 05:25 AM ----------

To be more clear, this is what I want but done in only one session , without ssh :
Code:
h3mis391_telnet=h3mis391bin
i=h3mis391
eval value=$`echo ${i}_telnet`
echo "value is $value "
value is h3mis391bin

So this way it works. The only difference is that I want
Code:
h3mis391_telnet=h3mis391bin

------------------------------------> to use ssh in this point
Code:
i=h3mis391
eval value=$`echo ${i}_telnet`
echo "value is $value "
value is h3mis391bin


Moderator's Comments:
Mod Comment How to use code tags


---------- Post updated at 07:54 AM ---------- Previous update was at 05:38 AM ----------

Yes, I've made a mistake. It works like this :
Code:
h3mis391_telnet=h3mis391bin
ssh -q user@server " i=h3mis391
> eval value=$`echo \${i}_telnet`
>  echo value is $value
> "
value is h3mis391bin

The difference was here :
Code:
eval value=$`echo \${i}_telnet`   # good
eval value=\$`echo \${i}_telnet`  # bad

But I'm not 100 % sure why... o.O

Last edited by vbe; 11-24-2011 at 09:05 AM.. Reason: Please use code tags for code and data samples, thank you
 

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