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I have installed a new device in linux. If I enter lspci, i can see the information of this device. But, I do not know which file in dev is mapped to this device.

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lspci does not show you drivers. –  Ignacio Vazquez-Abrams Jul 18 '11 at 8:04
    
What kind of device is it? The general class of device is a good place to start looking. –  Keith Jul 18 '11 at 8:18
    
It is a scsi card and it connect to a tape driver –  Ben Jul 18 '11 at 8:49

2 Answers 2

Then use lsscsi instead - that should show you all the SCSI devices and what device file corresponds to each one.

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The general answer for any device is to run dmesg or check /var/log/kern.log.

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