Process File List and Log Entries
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Reads a file list, processes each line, and logs specific entries to an output file.
About This Workflow
This workflow is designed to read a text file containing a list of entries, process these entries, and then selectively log them to another file. It's a basic example of file processing and command execution within n8n.
Key Features
- Reads binary file content.
- Processes file content into an array of lines.
- Executes shell commands to append data to a log file.
- Uses an IF node to control workflow execution based on data size and run index.
How To Use
- On clicking 'execute': This is the manual trigger to start the workflow.
- Read Binary File: Reads the content of
/home/n8n/filelist.txt. Ensure this file exists and contains the list of items to process, separated by newlines. - Move Binary Data: This node's purpose is unclear without further context of its parameters (
options,setAllData), but it appears to be part of the data handling pipeline. - Function: This node splits the read file content into an array (
arrData) and calculates the number of valid data entries (dataSize). It expects the file content to have at least two empty lines at the end. - Execute Command: This node appends a line to
/home/n8n/n8n-output.txt. The line includes the current file entry fromarrDatabased on the$runIndex. This node will execute for each item inarrData(excluding potentially empty ones based ondataSize). - IF: This node acts as a loop controller. It checks if the current
$runIndexis less than the totaldataSizefrom the Function node. If true, it proceeds to execute the command; otherwise, it goes to the NoOp node. - NoOp: A placeholder node that does nothing. It's reached when the loop condition in the IF node is no longer met.
Apps Used
Workflow JSON
{
"id": "c680c2de-c0dc-4b4d-8ad9-81c47e7ca629",
"name": "Process File List and Log Entries",
"nodes": 24,
"category": "Data Processing",
"status": "active",
"version": "1.0.0"
}Note: This is a sample preview. The full workflow JSON contains node configurations, credentials placeholders, and execution logic.
Get This Workflow
ID: c680c2de-c0dc...
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