Usage How it works History Download

Rowscope is a file viewer for large text files. It can read files larger than 1 GB.
It is very fast (a few seconds to examine a 1GB file) and it never blocks.
Here is a video showing how it works.


The idea back Rowscope is that a person cannot read the whole file when it is so large; a person can only read some parts of the file, possibly the ones that contain the information he is looking for.
For example when somebody reads the log file produced by an application, he will probably look for a specific error or for the lines produced in a specific period of the day.

With Rowscope the user:
  1. Localizes the part or parts of the file that he wants to read, using search strings or regular expressions.
  2. Then he can expand one of the rows he has found, which means that he makes Rowscope display the rows immediately before or after that row.
Going back to the log example, let's say the user wants to find what caused an error in the application. Knowing that the application logs its errors, he searches for the word ERROR.
Rowscope finds the rows containing this word. There is one specific row that describes exactly the error that he is looking for. Selecting the row and pressing the expand back button the user is able to display the rows immediately before the error row, getting to know the events that preceeded and possibly caused the error.

The main features of Rowscope are the following:

Rowscope is written in Scala and uses SWT for the GUI. The Rowscope icon comes from Wikimedia.