Author Archives: Jan Slupski

Debug memory errors with valgrind

Quick look at valgrind – the memory debugger and an option for disabling glibc memory debugging. Continue reading

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WindowMaker DockApp fix

What to do when WindowMaker DockApp does not show, or show in regular window Continue reading

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Playing DVD movie stored in an image on a disk

mplayer dvd:// -dvd-device /tmp/movie-image.iso

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Forward email as an attachment in pine

By default pine attaches forwarded messages inline. Here is trick to forward email as an attachment. It is sometimes important that you preserve original headers when forwarding email. Eg., if you want to report spam. Forwarding as attachment do preserve … Continue reading

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NFS: Permission denied

Not sure since what kernel, but you need to mount nfsd virtual file system on server. Otherwise you will get: mount: 10.1.0.1:/var/cache/yum failed, reason given by server: Permission denied To resolve it type: on server root console mount -t nfsd … Continue reading

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Quick NFS setup

Sometimes you need to setup “on demand” connection to access resources on other machine. I found it useful sharing yum cache (1GB+ of already downloaded updates) with the laptop that needs to be updated as well. Normally laptop update would … Continue reading

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IOGear GWU513 usb wireless adapter on Linux

How to make IOGear GWU513 USB WiFi adapter work on Linux Continue reading

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Very slow or dying Internet connection to some hosts

I you have very slow (or quickly dying) connection to selected hosts and they work normally from other machines/systems you may be experiencing broken TCP window scaling on a host that is on the route between you and the target … Continue reading

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ZIP unsupported compression method 99

How to handle ZIP files that fail with the code ‘unsupported compression method 99′ Continue reading

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Linux – Programming – Technology: blog introduction

For a few years I used to maintain random set of pages with some thoughts or tips on various Linux and programming related topics. A few of these pages got some attention over the time (Linux on Sony Vaio FX240 … Continue reading

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