Ferry Boender

Programmer, DevOpper, Open Source enthusiast.


Category: shell scripting

chkrootkit false positives filtering

Chkrootkit is a tool that searches for rootkits, trojans and other signs of break-ins on your system. Like most security scanners, it sometimes generates false positives. Chkrootkit doesn't have a native way to filter those out. From the FAQ: [Q:] chkrootkit is reporting some files and dirs as suspicious: `.packlist', `.cvsignore', etc. These are clearly […]

Floating point stuff in Bash

Shell scripting is powerful, but unfortunatelly it gets less easy if you want to perform floating point calculations in it. There's expr, but it only handles integers: [todsah@jib]~$ echo `expr 0.1 + 0.1` expr: non-numeric argument If you wish to perform floating point calculations in shell scripts, you can use the bc tool: "bc – […]

More XML Commandline unix tools

A little while ago I reported on a little XML toolset called XMLStarlet. XMLStartlet provided a bunch of commandline tools for reading and converting XML files from the commandline. Usefull in scripts. However, it uses a pretty complex interfacing. For instance, you'll have to know XPath to easily select a particular piece of XML to […]

XML commandline toolset

Those who are familiar with Unix commandline tools like grep, sed and cut will know about the enormous power they provide. They make it a breeze to mangle, transform and retrieve information in and from text files. Unfortunately, they're mostly dependant on row and column based information. That is, they expect each line in a […]

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