It has features which help with log reading, like a customizable highlighting filter, which lets you jump between highlighted entries, or show or hide only highlighted entries. Filtering lines out with keywords is nearly instant. Scanning to specific points in the file using the scroll-bar is simple, and instant. The speed is with which it opens the file is independent of the file size. It opens the file at the end of the file contents, and loads a small subset of the file into memory. But I've found it useful for all sorts of files, like SQL database script files, giant CSV files, server logs, etc.
Its targeted at being used with log files, which tends to be the majority of the giant text files I've encountered. I like to use LogFusion for this purpose. While I normally use it to open log files of around 1MB, I've have often used it to open 500MB to 800MB JBoss log files in the past without any problem. It automatically colour highlights lines with keywords like "error", "failure" or "warning" in, and you can set it to highlight other keywords. It "tails" log files, so you can see the live log data scrolling past (but also has a pause button, so you can actually read fast-moving logs). Then just has a big empty window ready to open a log file. The first time you run Cmtrace on a machine it will ask if you want to associate it with *.log files (or not). Though it comes as part of the SCCM toolkit, it happily opens any text file.
I keep a copy on my network home drive and most USB sticks that I own.
#010 EDITOR REGEX PORTABLE#
It's part of the System Center 2012 R2 Configuration Manager Toolkit (free download), but once you've extracted that, the cmtrace.exe in there is just 678KB and completely portable you can drop it onto any machine and run it with no install. I use Microsoft's Configuration Manager Trace Log Viewer for exactly this sort of task.
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