# Run SSH commands
## 
Run SSH commands
### Description
The Run SSH Commands transform allows you to execute commands over the secure shell (ssh) TCP/IP protocol.
You can pass text to stdout or stderr in the commands. This information can then be picked up by the transform and passed in a field to subsequent transforms.
| Hop Engine | ✓ |
| ---------- | ------------ |
| Spark | ? |
| Flink | ? |
| Dataflow | ? |
### Options
#### General Tab
| Option | Description |
| ------------------------ | ------------------------------------------------------------------------------------------------------------- |
| Transform name | Name of the transform. |
| Server name / IP address | You can specify the server or IP address of the machine on which you want to execute a command. |
| Server port | The TCP/IP port on which the ssh protocol lives on the server. The default is 22. |
| Timeout | The timeout in seconds. If set to a number larger than zero you can specify a non-default connection timeout. |
| Username | The username to log in with. |
| Password | The password to use. |
| Use key | Enable this option if you want to log in using a private key |
| Private key | The private key file. The private part of a private/public RSA key-pair (see: ssh-keygen) |
| Passphrase | The optional pass-phrase used when the key-pair was generated. |
| Proxy host | The proxy server host to use (name or IP address). |
| Proxy port | The proxy server port to use. |
| Proxy username | The proxy user name. |
| Proxy password | The proxy password . |
| Test connection | Use this button to see if the supplied credentials are sufficient for logging into the SSH server. |
#### Settings Tab
**Output**
| Option | Description |
| ------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Response field name | The name of the String output field that will contain the output of the executed command. This is the concatenation of both the stdout and stderr command output. |
| Error response field name | The name of a Boolean output field that will contain true if there was an error and false if the ssh command was executed successfully. |
**Commands**
| Option | Description |
| ----------------------- | ------------------------------------------------------------------------------ |
| Get commands from field | Enable this option if you want to execute commands specified in an input field |
| Commands field name | Select the input field that will contain the commands to execute |
| Commands | Field allows you to specify the commands to execute. |
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