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visits member for 4 years, 4 months
seen Feb 26 '11 at 3:09

Feb
23
comment Running really slow on my Linux workstation, need some assistance
Does not include I/O stats by default like I said. To include them: press F2, Setup->Columns, in Available Columns scroll down and find the IO_* ones. After adding them, then sorting the processes by IO, you will see which ones do it most.
Jan
30
comment change linux process priority
I like to use the term niceness in the context of nice/renice tools. This is because there are also other aspects which affect how much CPU a process can get. For example see scheduling attributes and chrt.
Jan
29
comment restrict ip stealing
There is software that can change the MAC address. In linux, you can change the MAC trivially, using ifconfig.
Jan
27
comment How to replace/delete HTML code from hundred of files?
What's the point of deleting the malicious code if you do nothing to avoid having it back later? You could automate the removal via cronjob, but I'm sure you understand this is a joke.
Jan
22
comment Is it safe to allot an IP address to a computer, and not running a webserver on it?
Is this pattern called DMZ?
Jan
19
comment how do i get python working on nginx
You'd better specify what python software are you planning to run, most python web stuff has specific instructions about running it with certain webservers.
Jan
13
comment Ubuntu (desktop) server needed for school
It is OK, people tend to hate things they don't understand.
Jan
11
comment Cannot run java as regular linux user
If you installed java from a repository, you'd better notify the maintainer.
Dec
29
comment Limiting network throughput of an already launched process ? (Linux/FreeBSD)
Did you mean "trickle"?
Dec
27
comment Problem for reading large log files in redhat linux server
@Javier: the best general advice. Another catch is to direct different log levels to different files if this is possible.
Dec
25
comment Configuring linux server firewall to allow access from a certain range of IP addresses
The link in my answer points to the HOWTO, which has examples for both a default DENY policy and an ALLOW rule for a certain IP. Stating that "I've seen a lot of tutorials but none of them fits what I needed" without providing any examples of rulesets that don't work triggers suspicions. I don't want the eventual example from my answer to become "one more tutorial that doesn't fit", but I'm sure that if the OP will post a ruleset for ufw that doesn't work for him, other SF readers will be able to tell him what's wrong with them.
Dec
21
comment What program sent which packet to the network
ulog seems to be obsolete
Nov
18
comment Networking security and TCP/IP internals books/sites
Why does the footer of your answer look like spam to me?
Nov
15
comment How to detect a hidden process in linux?
"I am no system administrator, but I was brought onto the team to resolve the situation" - this is priceless. To clear the things up: your question is perfectly OK. Your real-life situation is not. Whoever decided to involve you is wrong.
Nov
9
comment Am I being spied on my messenger?
@Tim Meers: if you are on a corporate network it's still called being spied on, even if it is mentioned explicitly in the corporate policy. A sane policy would just prohibit instant messaging at work for personal use, if the employer considers this a problem.
Nov
6
comment Building a Linux web server
If you are asking which Linux distro you should be running, you are certainly not ready to run your own web server.
Nov
5
comment Ubuntu: How to add an iptables rule that UFW can't create
ufw is one of those "what you see is all you get" things that make it easier for newbies. If you need to do more than it can do, consider switching to iptables completely. That "working really well for me" is a good proof that you can try something (iptables) more complicated (but also more flexible).
Nov
1
comment How to log all remote destinations a networking process is exchanging data with?
Seems to be abandonware. Vanilla source without debian patches compiles on my Slackware 13.1, but when running it I see segfault reports related to it in syslog. It also seems to watch for TCP traffic only, while I need UDP too (but hey, it doesn't seem to work for me anyway, since it is segfaulting).
Nov
1
comment How to log all remote destinations a networking process is exchanging data with?
A complex app (like a daemon) could fork and spawn children. Also, threads are implemented in Linux as processes IIRC. Is strace smart enough to handle such edge cases correctly as well? Also, would stracing have a heavy impact on performance? I want to run an app the usual way and collect stats, so its performance better not be impacted badly by the inspecting logic (whatever would it be).
Nov
1
comment How to log all remote destinations a networking process is exchanging data with?
Also, the lsof/netstat approach is inconvenient (you motivated that yourself). The iptables approach has drawbacks as well, an user can own many processes and it would work anyway for outgoing data only. Like I said, this is not the application level.