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3697d230Kernel logs
So, there I am browsing my logs. BAM [ 650521.310292 ] INFO: task mysqld:2730 blocked for more than 120 seconds. [ 650521.310320 ] "echo 0 /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 650521.310364...
3697d156Kernel logs
So, there I am browsing my logs. BAM [ 650521.310292 ] INFO: task mysqld:2730 blocked for more than 120 seconds. [ 650521.310320 ] "echo 0 /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 650521.310364...
3700d72Playing with dhcpd
Yes! At work today we made dhcpd crash on a /etc/dhcpd.conf :) We were working towards the following (now working) setup: class igel { match if binary-to-ascii(16, 8, - , substring (hardware, 0, 5)) = 1-0-e0-c5-67 ; }...
3700d241Playing with dhcpd
Yes! At work today we made dhcpd crash on a /etc/dhcpd.conf :) We were working towards the following (now working) setup: class "igel" { match if binary - to - ascii ( 16 , 8 , "-" , substring ( hardware , 0 , 5 )) =...
3700d144Playing with dhcpd
Yes! At work today we made dhcpd crash on a /etc/dhcpd.conf :) We were working towards the following (now working) setup: class "igel" { match if binary - to - ascii ( 16 , 8 , "-" , substring ( hardware , 0 , 5 )) =...
3701d62Using LaTeX with a label writer
I wanted to pretty print my labels on my (new) Dymo 400 label writer. All the howtos I found were detailing how to use LaTeX to print a sheet of labels. But I needed some LaTeX-foo to print only one. So /me to the rescue...
3701d250Using LaTeX with a label writer
I wanted to pretty print my labels on my (new) Dymo 400 label writer. All the howtos I found were detailing how to use LaTeX to print a sheet of labels. But I needed some LaTeX-foo to print only one. So /me to the...
3701d161Using LaTeX with a label writer
I wanted to pretty print my labels on my (new) Dymo 400 label writer. All the howtos I found were detailing how to use LaTeX to print a sheet of labels. But I needed some LaTeX-foo to print only one. So /me to the...
3707d68Making a library
We (my wife and I) have a lot of books, currently some 637 $ sqlite3 biblio.db 'select count(*) from books' 637 But we seem to loose books occasionally because we lend them to people and forget about it. So Linux (and...
3707d218Making a library
We (my wife and I) have a lot of books, currently some 637... $ sqlite3 biblio . db ' select count ( * ) from books ' 637 But we seem to loose books occasionally because we lend them to people and forget about it. So...
3707d145Making a library
We (my wife and I) have a lot of books, currently some 637... $ sqlite3 biblio . db ' select count ( * ) from books ' 637 But we seem to loose books occasionally because we lend them to people and forget about it. So...
3708d401WHOIS lookups and domain name registrations follow news...
The day following the death of Michael Jackson, Google published a graph showing that their system were heavily hit by queries related to this news. Details can be found on the Google Official Blog. Our experiments...
3714d74Full file system and I/O redirection
This is an English translation of a blog item I wrote for AT Computing While giving a course a student showed me the following: $ ps -ef /tmp/file Where /tmp is 100% filled yields no errors and seems to have worked! Lets...
3714d239Full file system and I/O redirection
This is an English translation of a blog item I wrote for AT Computing While giving a course a student showed me the following: $ ps - ef / tmp / file Where /tmp is 100% filled yields no errors and seems to have...
3714d150Full file system and I/O redirection
This is an English translation of a blog item I wrote for AT Computing While giving a course a student showed me the following: $ ps - ef / tmp / file Where /tmp is 100% filled yields no errors and seems to have...
3724d692Anycast DNS - Part 5, Using BGP
In this fifth article on Anycast DNS, we provide some examples of deploying Anycast using Border Gateway Protocol or BGP, the core routing protocol of the Internet. While BGP is mostly used by Internet Service Providers...
3728d682.6.30 and Ubuntu Jaunty
Well, thanks to Ubuntu I m now running the new (new!) 2.6.30 kernel on my systems. No ill effects as of yet Btw, I ve written the following script to download the latest kernels from Ubuntu: SYNOPSIS: latest 29.4, this...
3728d2432.6.30 and Ubuntu Jaunty
Well, thanks to Ubuntu I'm now running the new ( new! ) 2.6.30 kernel on my systems. No ill effects as of yet... Btw, I've written the following script to download the latest kernels from Ubuntu: SYNOPSIS: latest...
3728d1512.6.30 and Ubuntu Jaunty
Well, thanks to Ubuntu I'm now running the new ( new! ) 2.6.30 kernel on my systems. No ill effects as of yet... Btw, I've written the following script to download the latest kernels from Ubuntu: SYNOPSIS: latest...
3738d76Group policy in Linux
Suppose you want to limit access to some servers, only people member of a specific group (or multiple groups) may log in. The following is one way to tackle this. In this example I will configure ssh access in such a way...
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