• Unix: Counting chickens or anything else

    Posted April 20, 2014 - 6:45 pm

    Unix tools make it easy to find strings in files, but what if you want to find specific whole words, more complex text patterns, or every instance of a word or pattern?
  • Unix: Finding your files your way

    Posted November 4, 2013 - 12:48 pm

    It's easy to find files on Unix systems. You can find them by almost any criteria that you can imagine. The bigger challenge is deciding how to describe what you're looking for and deciding what to do with the files once you find them.
  • Groping through big data with grep

    Posted July 6, 2013 - 4:49 pm

    The grep command has a lot more options and "flavors" than the casual command line pioneer might expect, but there are some options and limitations that you should know about when you're working with big data files.
  • Usenix: Dartmouth expanding diff, grep Unix tools

    Posted December 8, 2011 - 6:40 am

    With some funding from Google and the U.S. Energy Department, a pair of computer scientists at Dartmouth University are updating the venerable grep and diff Unix command line utilities to handle more complex types of data.
  • Review

    Review: Hermetic Word Frequency Counter Advanced

    Posted December 8, 2010 - 10:53 pm

    Hermetic Word Frequency Counter Advanced is a useful utility for analyzing the contents of your text files, either individually or in batch mode. In many ways, it's a friendly shell around common grep functionality. The default is to simply count the unique words in a file, and their frequency (common English words like a and the are normally not counted, though this can be changed). This alone has some utility for programmers, but the real power of this program comes in two features: The ability to scan an entire folder tree and the ability to look for and count specified patterns.
  • Unix How-To: Counting Anything

    Posted September 15, 2010 - 11:23 am

    A reader recently asked whether it was possible on Unix systems to count how many times a particular character appears on each line of text. "On Unix", I answered, "not only is just about anything possible, but there are usually half a dozen ways to do it".
  • Unix Commands to Try When You're Bored

    Posted June 9, 2010 - 4:47 pm

    Not every Unix command sparks with novelty. After all, the OS has now been around for roughly forty years and the spark wears off. But there are some commands that pick up from where the basics run out of steam. Jump on a Linux box and try these out when you have a little free time. You might surprise yourself with some new tricks for your bag of Unix goodies.
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