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Category: linux

traceroute Fails with -F (do not fragment bit) Argument

With traceroute-1.4a12-XX  the -F argument is used to avoid intra-switch fragmentation. From traceroute(8) manpage:        …       -F     Set the “don’t fragment” bit.       … When ‘-F’  is specified the traceroute fails to get connected. Even with localhost:

linux

Extra Data Received on Transport in Urgent Mode (MSG_OOB)

While transmitting data in Urgent Mode  at the socket layer: Urgent mode is initiated using send(…, MSG_OOB), Current outgoing queue is longer than MTU Several packets are sent out with the URG flag set. The Urgent Pointer field in the TCP header is not updated correctly. Instead, it stays the same.

kernel

Importance of Price, Quality and Support Effectiveness for Virtualization

See this page for a good story about it .. Some highlights:

linux

Converting video’s for Motorola ROKR E6

The ROKR E6 has a 320×240 (QVGA) screen where the QCIF is 176×144.. The aspect ratio does not match.. xCIF is mandatory with the h263 codec.. I know Rokr E6 can play h263.. But any QCIF fornat dıes not look good. The aspect ratio is 1.22 for CIF. The phone screen is 320×240 (QVGA) where…

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linux

A Baby Named “Linux”!!

By Linux.com Staff on October 11, 2008 (2:00:00 PM) Reader Christian Nielsen wrote from Sweden to tell us he and his girlfriend have named their baby Linux, after the operating system, and attached this darling photo.

kernel

Linux Based Open Source Vehicle OS

Wow! That is a cool idea!…

firmware

Giant Java Processes

As we see that the resident memory (RES) got for the java/jvm is 3.9 GB. As we are on an 32-bit system, that is basically pushing the limits of the address space. For this to happen the max heap for the JVM being run should have been set at least 4GB.

development

Exporting Evolution (contacts) Entries

To export all vcards I use exportevolution.py:  $ exportevolution.py > /home/oyuksel/junk/alo.vcf  $ I am working on a script called splitvcf.py to generate separate vcards.  $ splitvcf.py   727 files created.  $I’ll put those into a sf project soon.

desktop

Wireless on Dell Latitude D630 with OEL5

I have been referring to linlap for this configuration. The configuration has been made possible via ipw3945 and iwlwifi. To be more precise:

desktop

gawk – use semicolon as delimiter

semicolon (;) is a shell directive.. So you need to escape it with \     awk -F\; ‘{ print $2 }’ file1

linux

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