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removing extra console terminals

Posted 11-20-2011 at 06:12 PM by neonsignal

Many Linux distros are installed to have multiple consoles, selected using ctrl-alt-f1 through to ctrl-alt-f6. Where memory is extremely tight, this can be reduced to save some space, by commenting out the relevant [i/]/sbin/getty[/i] lines in /etc/inittab. This will also mean that X will be invoked from a different ctrl-alt-f sequence.

Note that this will only save around half a meg of resident memory per console, so for conventional desktop/laptop systems it is not worth changing....
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Old

virus scanning

Posted 11-20-2011 at 06:02 PM by neonsignal
Updated 11-20-2011 at 06:03 PM by neonsignal

Although malware has not been the same problem to the same degree on Linux as on other operating systems, it is still possible to run a virus scanner.

A straightforward one is clamav, which is in the repositories of many distros. Typically the install will set up a cron job to grab daily virus signature list updates (this can be disabled by removing /etc/cron.d/clamav-freshclam). The signature list can also be updated manually:
Code:
freshclam
To scan...
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Old

Useful linux basic commands

Posted 11-20-2011 at 08:36 AM by ted_chou12
Updated 11-20-2011 at 08:42 AM by ted_chou12 (sed "s:its:it's:g")
Tags basic, commands, pdf

Hi, I found this online, it's pretty useful, I printed one out and posted on my wall XD. Cause I am not a pro, so I don't think memorizing them is necessary. But if u do frequently use them, u probably would remember, anyways, c attachment.
Attached Images
File Type: pdf linux_basics.pdf (69.1 KB, 4 views)
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Old
Rating: 2 votes, 3.00 average.

Traffic and Process Id correlation with audit and ULOG on IA-32 Centos-5.7

Posted 11-20-2011 at 08:24 AM by unSpawn

# ...being basically a clarification of dump all packets and list them according to the processes that either sent or received them and what command could display current running processes relating to eth0 so I can refer back to this when needed.

The question: generate an audit trail that includes captured traffic and process information.
The problem: when capturing packets no process information is stored.
Solution: correlation provides the "glue" between...
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Old

mixing stable and testing packages

Posted 11-19-2011 at 09:42 PM by neonsignal

Sometimes when sticking with a Debian stable version, it can be useful to just update one or two packages to a testing or even unstable version, because of new features.

The ideal way to do this is to use backports, because these have been tested (and patched if necessary) to work with the stable versions of other packages. The backports repository is added to /etc/apt/sources.list:
Code:
deb http://backports.debian.org/debian-backports/ squeeze-backports main contrib
...
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