Iterate Over Files in Bash

November 10, 2010 Leave a comment

Sometimes you need to whip up a dirty bash script to process through some text. I needed to iterate over my database log files that I wrote about from my last post and then output the result to a new file. I wanted the output files to have a different extension, but I wasn’t sure how to get just the filename from bash, fortunately this post helped.

#!/bin/bash

for logfile in *.log
do

fn=${logfile%.*} #cut extension

echo making $fn.data...
egrep '\#\ collect|\:\=' $logfile > $fn.data 

done

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-JP

Filed under Linux Tagged with

Grep for Two or More Expressions

November 9, 2010 1 Comment

Unfortunately a database of mine crashed. Fortunately, I have log files with the data. I need the timestamp and the data.

The lines in the log files look something like this:

####### collect $TIMESTAMP #########
*GARBAGE
*GARBAGE
*GARBAGE
$ID:=$DATASET
*GARBAGE

It’s been years since I’ve done anything more than a simple grep. I wasn’t even sure which grep I needed… egrep? fgrep? grep?

I can use this regex for the timestamp line:

\#\ collect

I can use this regex for the dataset line:

\:\=

But how can I put them together? It’s probably of no surpise that I can use the ‘|’ operator like so:

egrep '\#\ collect|\:\=' 2010-09-25.log

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That’s it! Follow me on Twitter @jprichardson and read my blog on entrepreneurship.

-JP

Filed under Linux Tagged with

Get All ProgID on System for COM Automation

November 8, 2010 Leave a comment

If you want to use Silverlight COM Automation, you need to know the ProgID of your COM component. These are buried in the registry. Here is a snippet that I found (don’t remember where) and modified a bit to do this:

var regClis = Registry.ClassesRoot.OpenSubKey("CLSID");
var progs = new List<string>();

foreach (var clsid in regClis.GetSubKeyNames()) {
	var regClsidKey = regClis.OpenSubKey(clsid);
	var ProgID = regClsidKey.OpenSubKey("ProgID");
	var regPath = regClsidKey.OpenSubKey("InprocServer32");

	if (regPath == null)
		regPath = regClsidKey.OpenSubKey("LocalServer32");

	if (regPath != null && ProgID != null) {
		var pid = ProgID.GetValue("");
		var filePath = regPath.GetValue("");
		progs.Add(pid + " -> " + filePath);
		regPath.Close();
	}

	regClsidKey.Close();
}

regClis.Close();

progs.Sort();

var sw = new StreamWriter(@"c:\ProgIDs.txt");
foreach (var line in progs)
	sw.WriteLine(line);

sw.Close();

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Follow me on Twitter: @jprichardson and read my blog on entrepreneurship: Techneur

-JP

Filed under C#, Silverlight Tagged with

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