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Progress bar for DD

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I am still searching for a perfect progress bar for DD, I know a dirty trick[*1] – put DD to background an sending “USR1” signal to bring it to show a progress – I hate this solution!

This one is not so dirty, but you have only the done progress and transfer speed.

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dd if=/opt/wap/Backup.tib | pv | ssh -c arcfour id@tower "dd of=/home/id/Backup.tib"
1.94GB 0:01:15 [30.1MB/s] [<=>

Dirty trick:
Only local way!

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dd if=/opt/wap/Backup.tib of=file.img bs=4KB& pid=$!
while true; do kill -USR1 $pid && sleep 1 && clear; done

Mount LVM from liveCD

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Yeah after installation of Windows seven – my Grub-Bootloader was removed and I get only the Windows bootmager.

This article describe hot to mount root “/” which was created on LVM from a live CD and install GRUB Boot-Loader.

Step 1: Get a live CD in my case it was Ubuntu 10.10 Desktop edition.
[Read more…]

Squid visited sites

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You have a IP-Address from a PC, and you want to know which web-sites ware visited from this PC.

Grep for PCs IP-Address in the access log of your proxy box.

As result you will get a list with visited sites.

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grep 172.16.0.5 /var/log/squid3/access.log | cut -d" " -f7 | sort -u | less

HDD temperature

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Important hardware monitoring – check HDD temperature:

Install (Debian /Ubuntu way):

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aptitude install hddtemp

Check it:

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hddtemp /dev/sda1
# Output:
# /dev/sda1: ST31500341AS: 42°C
# /dev/sdb1: ST31500341AS: 38°C
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hddtemp -n /dev/sda1
Output:
# 42

Simple Python HTTP-Server

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Sometimes I have to share some files over HTTP and I have no time to install apache or lighty. Everyone who has python can use SimpleHTTPServer module which can be started from command line.
Every request to your files will be logged to the terminal.

Start web server in some directory which should be shared:

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[root@hexa-core webserver]# python -m SimpleHTTPServer 88
Serving HTTP on 0.0.0.0 port 88 ...

You can change the port!

Logs:

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pD4B88C85.dip.t-dialin.net - - [13/Jan/2011 21:57:01] "GET / HTTP/1.1" 200