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Shell Programming and Scripting

Problems with remotely executing scripts

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# 1  
Old 10-21-2011
Error Problems with remotely executing scripts
Hi,

in the below command, i export a value to a variable which later is used by the script, however i dont see the exported value is actually been exported.

Code:
ssh user@host "export var=/path/ ; cd /path/ ; ./script"

how can i use the above command with proper value of var remotley
# 2  
Old 10-21-2011
It works for me...

Code:
cat run
 
#!/bin/bash
echo "My path is : $mypath"

Code:
ssh localhost "export mypath=/home2/aen/; cd /home2/aen/; ./run"
My path is : /home2/aen/

Check the usage of the variable in the script.

--ahamed
# 3  
Old 10-21-2011
You have to make your shell send a literal $ to the other end to use variables. That means putting things in single quotes, where the shell isn't allowed to substitute by itself.

One layer of quotes gets stripped out when you run the shell command, letting it substitute properly on the other side.

Code:
ssh user@host 'export var=/path/ ; cd "$var" ; ./script'

This User Gave Thanks to Corona688 For This Post:
suraj.sheikh
# 4  
Old 10-21-2011
To illustrate the relative correct execution of ahamed:
Code:
ant:/home/vbe/z01 $ ssh an12 "export mypath=/etc/; cd $mypath; /home/vbe/run"
vbe@an12's password: 


I am now here :  /home/vbe
My path is : /etc/
ant:/home/vbe/z01 $ ssh an12 "export mypath=/etc/; cd $"mypath"; /home/vbe/run"
vbe@an12's password: 


I am now here :  /etc
My path is : /etc/
ant:/home/vbe/z01 $

Forgot run code...
Code:
an12:/home/vbe $ more run
#!/bin/ksh
echo "I am now here : " $(pwd)
echo "My path is : $mypath"
run: END

# 5  
Old 10-22-2011
Its still not working for me what i am doing is

Code:
user1@host1: ->ssh user@host "export DIR=/trumpet/uatuse1/uat/ogs/QUANTUM/NXT/data ; echo $DIR"

user1@host1: ->

# 6  
Old 10-22-2011
Try this and see if you are getting any output...
Code:
ssh user@host "echo 123"

--ahamed
# 7  
Old 10-26-2011
i get this

Code:
user1@host1 ->ssh user@host "echo 123"
123
user1@host1 ->
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