executing command via ssh library in robotframework - ssh

Question

executing command via ssh library in robotframework
I'm using robotframework to connect to a remote server and start an application there. I use these keywords:
Create SSH Link
Open Connection ${Ip}
Login ${Username} ${Password}
Start Service
${cmd} = "cd " + ${appAddr} + "; ./" + ${appName} + " " + ${appInputArg} + " > /tmp/" + ${appName} "-out.log 2>&1"
log to console Going to run command: ${cmd}
execute command ${cmd}
log to console \nConnected Successfully
Run App
${cmd} = "netstat -putan | grep LISTEN | grep 8898 | awk '{print $7}' | cut -d '/' -f 1"
${stdout} = execute command ${cmd}
Run Keyword If ${stdout} == ${EMPTY} log to console \nCommand ${cmd} retruned Error
Run Keyword Unless ${stdout} == ${EMPTY} Start Service
And this is my test case:
Test Connecting to Remote Server
Create SSH Link
Run App
And Output:
==============================================================================
Scenarios
==============================================================================
Scenarios.Test :: First Test
==============================================================================
Test Connecting to Remote Server
Connected Successfully
| FAIL |
No keyword with name '"netstat -putan | grep LISTEN | grep 8898 | awk '{print $7}' | cut -d '/' -f 1"' found.
------------------------------------------------------------------------------
Scenarios.Test :: First Test | PASS |
0 critical tests, 0 passed, 0 failed
1 test total, 0 passed, 1 failed
==============================================================================
Scenarios | PASS |
0 critical tests, 0 passed, 0 failed
1 test total, 0 passed, 1 failed
==============================================================================
Why it's not going to execute this command on the remote server and searching for a keyword??

Answer 1

The problem lies in this statement:
${cmd} = "netstat -putan | grep LISTEN | grep 8898 | awk '{print $7}' | cut -d '/' -f 1"
This is not a valid Robot Framework Statement. Robot Framework is looking for a keyword and can not find any in this statement.
It should be changed into:
${cmd} = set variable netstat -putan | grep LISTEN | grep 8898 | awk '{print $7}' | cut -d '/' -f 1
Note: no need for double quotes around your string. By default variables are string in Robot.