The ExecuteStreamCommand processor provides a flexible way to integrate external commands and scripts into NiFi data flows. ExecuteStreamCommand can pass the incoming FlowFile's content to the command that it executes similarly how piping works.
| Display Name | API Name | Default Value | Allowable Values | Description |
|---|
| Working Directory | Working Directory | | | The directory to use as the current working directory when executing the command
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| Command Path | Command Path | | | Specifies the command to be executed; if just the name of an executable is provided, it must be in the user's environment PATH.
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry) |
| Command Arguments Strategy | argumentsStrategy | Command Arguments Property | - Command Arguments Property
 - Dynamic Property Arguments
| Strategy for configuring arguments to be supplied to the command. |
| Command Arguments | Command Arguments | | | The arguments to supply to the executable delimited by the ';' character.
Supports Expression Language: true (will be evaluated using flow file attributes and variable registry)
This Property is only considered if the [Command Arguments Strategy] Property has a value of "Command Arguments Property". |
| Argument Delimiter | Argument Delimiter | ; | | Delimiter to use to separate arguments for a command [default: ;]. Must be a single character
This Property is only considered if the [Command Arguments Strategy] Property has a value of "Command Arguments Property". |
| Ignore STDIN | Ignore STDIN | false | | If true, the contents of the incoming flowfile will not be passed to the executing command |
| Output Destination Attribute | Output Destination Attribute | | | If set, the output of the stream command will be put into an attribute of the original FlowFile instead of a separate FlowFile. There will no longer be a relationship for 'output stream' or 'nonzero status'. The value of this property will be the key for the output attribute. |
| Max Attribute Length | Max Attribute Length | 256 | | If routing the output of the stream command to an attribute, the number of characters put to the attribute value will be at most this amount. This is important because attributes are held in memory and large attributes will quickly cause out of memory issues. If the output goes longer than this value, it will truncated to fit. Consider making this smaller if able. |
Dynamic Properties allow the user to specify both the name and value of a property.