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  6. Read/Write File
Updated on August 14, 2025

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Read/Write File

Estimated reading: 3 minutes 328 views

An action that reads text or binary data from a file or writes data to a file.


[File Editor Selection]

Select the file editor to use.

File editors can be added, edited, or deleted from the selection window or [Settings] -> [File Editor].



[Command]

Select the command to execute.

  • Read: Reads a file and stores its content in a variable.

  • Read Line: Reads only one line from a file and stores it in a variable. After reading, it automatically moves to the next line.

  • Write: Writes text or binary data to a file. Creates a new file if it doesn’t exist.

  • Append: Appends data to the existing content of a file. Creates a new file if it doesn’t exist.

  • Clear All: Deletes all content from the file.

  • Close File: Closes the open file.

  • Is End of File: Stores whether the end of file (EOF) has been reached in a variable.



[File Path]

Enter the path of the file. Only displayed when [Command] is not “Is End of File (EOF)”. If you enter a new path without closing the currently open file for reading or writing, the previous file will be automatically closed.


[File Mode]

Select the data type to read or write from the file. Only displayed when [Command] is “Read”, “Write”, or “Append”.

  • Text: Reads or writes text from/to the file.

  • Binary: Reads or writes binary (byte array) data from/to the file.



[Cursor Position]

Select or enter the cursor position for reading or writing the file. Only displayed when [Command] is “Read”, “Read Line”, or “Write”.

The file cursor is a pointer that indicates the current byte position for reading or writing, and when data is read from or written to a file, the cursor automatically moves to the next position.

For example:
– When a file is opened, the cursor initially points to the beginning (0) of the file.
– When data is read or written, the cursor moves forward by the amount read or written.
– When the file content is read to the end, the cursor reaches the end of file (EOF).



[Size to Read]

Select or enter the size to read from the file. Only displayed when [Command] is “Read”.


[Input Size to Read]

Enter the byte size to read from the file. Only displayed when [Read Size] is “Set Size”.


[Read Content]

Select a variable to store the content read from the file. Only displayed when [Command] is “Read” or “Read Line”.


[Clear Existing Content]

Select whether to delete existing content when writing data to the file. Only displayed when [Command] is “Write”.


[Write Content]

Enter the data to write to the file. Only displayed when [Command] is “Write” or “Append”.


[Auto Line Break]

Select whether to add a line break before writing text when appending to existing file content. Only displayed when [Command] is “Append”.


[End of File (EOF)]

Select a variable to store whether the cursor has reached the end of file (EOF, End Of File). Only displayed when [Command] is “Is End of File (EOF)”.

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