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About Denis Mello
(Top Expert on this page)

Expertise
I have been working with Linux distributions over the last 3 years. I have experience with Linux Security, shell-scripts and network troubleshooting.

Experience
Configuring IMAP, Sendmail, Samba and network connections. Also developed shell-scripts to automated basic functions.
Expert in network security (honeypots, vulnerabilities, tools)

Education/Credentials
Graduated in Mechatronic Engineering, concluded part of a Master Degree in Materials Engineering. Master Business administrator (IT Management).
Microsoft Certified (MCP), Linux LPI, IBM Cerfied in Rational and SAP Netweaver Consultant.

   

You are here:  Experts > Computing/Technology > Focus on Unix > Unix/Linux OS

Questions Answered By Expert  Denis Mello 
In Category  Unix/Linux OS

SubjectDate Asked

NOKIA 6120c AS MODEM ON UBUNTU 9.0410/31/2009
  Q: i would like to know how i can use my nokia 6120c to act as a modem for the internet with my first ...
  A: Personally I donīt know this configuration and I've never tested it, however I found a good tutorial ...
DNS and FTP10/30/2009
  Q: Below is what I know about how DNS and FTP are used. My question is, what are the most common ...
  A: I can't say exactly what to do more, since I don't know what is the depth required for the report. ...
DNS and FTP10/30/2009
  Q: Below is what I know about how DNS and FTP are used. My question is, what are the most common ...
  A: Ok. I got it. Check this out. Instead of writing all the aspects, I'll indicate some sites that ...
DNS and FTP10/29/2009
  Q: Below is what I know about how DNS and FTP are used. My question is, what are the most common ...
  A: Andy. First of all, your description is very wide and comprehensive. As they are different ...
edit stuff10/29/2009
  Q: there exist a script looks like this expect { -re ".*X.*" {send "A-specific ";sleep 1} -re ".*X2.*" ...
  A: I was testing your shell script but I think that it is only a part of a bigger script, isn't it? ...
Shell script2/16/2009
  Q: I want to learn the basic of shell script so that I can keep backup any folder in a specific time ...
  A: I undestand your doubt, but I would write a lot in order to teach you the fundamentals of ...
wifi9/9/2008
  Q: Denis, Thank you for your time. I bought a Compaq Presario C700 (C771US) notebook last weekend and ...
  A: That's the kind of question that comes back to the forum over the time. I did not check whether your ...
Switching to Unix9/6/2008
  Q: Mello I am using Windows since the early version 3.2 working under DOS platform, today my version is ...
  A: Greeting Mr. Yaser. I hope to turn easy you migration. For sure, it's a little bit confusing by ...
linux operating systems3/26/2008
  Q: i want to know how much it would cost to use this sytems for a variety of computers. how much would ...
  A: It is free! I mean, most of the Linux Distros are free. You can download through the Internet, burn ...
HP Unix printing with InfoLease3/13/2008
  Q: We can not resolve an issue when printing from Unix. The application Infolease, will generate a ...
  A: I got your point. I have worked at HP and I have faced some printing issues with very different ...
Ubustu+XP+Security3/2/2008
  Q: To help provide clear questions I'll number the main ones. I am currently dual-booting between ...
  A: See below my comments: 1. Which versions of Unix and of Linux will have a better chance of "running ...
Loggin time2/13/2008
  Q: Sir, Can i find out the first login time of a user in a day in linux? I want to find the time ...
  A: For sure. You can configure a firewall through iptables on the linux box or even configure the FTP ...
Loggin time2/12/2008
  Q: Sir, Can i find out the first login time of a user in a day in linux? I want to find the time ...
  A: Linux logs are contained in the /var/log directory. There are several log files that are maintained ...
awk and text editing2/8/2008
  Q: I'm trying to edit a text file using AWK. Its been so long since I've used it I cant remember how. ...
  A: I'm not such a fan of awk command although I agree that is a very good command to work in. I can ...
Installing ATI drivers on Ubuntu 7.101/29/2008
  Q: I would like to install Ubuntu 7.10 on a spare computer in our office to see if it would fit our ...
  A: Sorry for the delay Patrick. I missed my last message for you. The way Linux handles packages ...
Sendmail to exchange1/24/2008
  Q: We currently have sendmail but are upgrading to exchange 2007. Do you have any quick way to bring ...
  A: I do not have any tips in hands, but I recommend you the following: ...
Linux1/6/2008
  Q: This is Bharath From Bangalore, i am working as Linux administrator and i also finished my (RHCE) ...
  A: Mr. Kumar. I'm sorry for the delay. I strongly believe that you have more skills in Linux than me, ...
Wireless card trouble with Suse 10.28/12/2007
  Q: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02) thats my ...
  A: It seems that you alredy did everything that is wanted. Did you try to attach the router's IP ...
about linux installation8/7/2007
  Q: i am trying to install windowsxp after installing redhat linux, but after installing windows i am ...
  A: Maybe you install Linux over your Linux accidentally. My question is: can you see your Windows ...
Regarding . ./8/6/2007
  Q: what does . ./ mean
  A: Not sure but I guess you're talking about relative paths. Take a look on that: ...
diskless node7/24/2007
  Q: I have pc running windows xp and 10 older pcs with windows xp on bad hd. I would like to disable ...
  A: Peter. To be honest with you, I don't know in depth how to configure. What I know for sure is: From ...
please help5/8/2007
  Q: !! I was running some program on LINUX , and after that when i switched on the system. it shows the ...
  A: Personally I didn't know nothing about this issue but I performed a research and my conclusion is ...
Oracle application5/6/2007
  Q: Could you please help me what should I check or what will be the check list if i wana have oracle ...
  A: Check the information in the pages below: ...
Dual Boot - need defaulting to Windows4/17/2007
  Q: I just installed a Mandriva System dual booting with existing Win XP but the PC's default OS has ...
  A: YOu need to configure LILO. Search for lilo.conf and edit it. lilo.conf, que segue abaixo: ...
Unix vs Linux - Process management2/26/2007
  Q: What are the differences between UNIX and Linux in terms of process management (Processes, process ...
  A: It is better I make a reference to external links than explaining a lot for you. Here they go: ...
New pc with a Linux distro and Win Xp pro?2/23/2007
  Q: I am ordering a new pc desktop, amd x2, dual core 4200, 2- 250 sata hds. 1 gig of 667 ram,, dual ...
  A: Well Dan. Ubuntu is considered to be one of the most accepted distro of Linux for home users. Apart ...
i want a project in shell scripting........11/21/2006
  Q: Hai Denis Mello, I want a project of any type with code in shell scripting.I hv to ...
  A: I'm not sure what you mean. If you wanna something for academic matters so you need to develop ...
Can't get access to network11/18/2006
  Q: Why I can't connect to my network server..my server is Linux mandriva and my workstation is ...
  A: What kind of access are you trying? Have you ever accessed this server before? In fact, in order to ...
I'M A NOOB!!! w00t! POSIX ME! ;-)8/10/2006
  Q: SUBJECT: I'M A NOOB!!! w00t! POSIX ME! ;-) MESSAGE: Hi! I'll keep this as concise as possible. :) ...
  A: 1. Should I go with Unix or Linux? Linux (for sure!!!) - it's free (unless the enterprise version), ...
Shell Scripts in color8/10/2006
  Q: I use PuTTY to ssh in to my linux clients (mostly Fedora Core 4). You know how you can view the ...
  A: This is changed in the tool. See the step-by-step procedures. Guess will solve your doubt. ...
Installing RPM packages8/3/2006
  Q: I have installed Mandrake Linux 10 with KDE on my computer. For downloading certain programs, i'm ...
  A: Regarding to .tar, you can extract anywhere. The most importat part is run the "make" and ...
changemode8/2/2006
  Q: what's meaning chmod 1777 ,what's stand for 1 in this ,if another term in place of 1 what's ...
  A: Think this explanation as being used in the folder /mnt/gentoo/tmp. I think the 1 means "sticky ...
UNIX Installation7/26/2006
  Q: I have Windows XP Professional on my machine. Now at the same time I also wish to have UNIX on my ...
  A: There is no free Unix but LINUX (a kind of UNIX, derived actually). There are available on the net, ...
background processes6/24/2006
  Q: How can a process on linux know that it is executing in the background?
  A: In general, you can't tell if you're running in the background. The fundamental problem is ...
internet6/12/2006
  Q: If I use a Linux "Live CD" on my networked computer at work, would it be less detectable than ...
  A: I'm sorry because I sent a response for you but for some reason you did not receive. Well, as you ...
vi command6/7/2006
  Q: I am trying to edit the /tmp/list file and change the setting of the PASS_MAX_DAYS to 100. i have no ...
  A: Take the total number of lines in your script. Then do the following: :x,ys/PASS_MAX_DAYS ...
debian on a dell dimension6/6/2006
  Q: Gave the computer back to Dell. Appreciate you answer. That bios thing is the setup gotten with F2 ...
  A: The BIOS. You're right. As soons as I know this is not true. See this: ...
Matching a computer manufacturer with Linux6/6/2006
  Q: Is there a particular computer manufacturer that works well with Linux preferably Debian?
  A: There is no particular manufacturer that works well with Debian. It has been built to work well in ...
Linux commands6/6/2006
  Q: I am using Ubuntu linux and I try to find the command in the shell: -Display the name of the current ...
  A: - -Display the name of the current directory: pwd - locate myfile.list - add the variable ...
linux amd Windows6/4/2006
  Q: My knowledge on Linux is very limited. But I'd like to add a linux machine (Ubuntu may be) in my ...
  A: The word is SAMBA. SAMBA is a service that allows Windows and Linux boxes to communicate with each ...
debian on a dell dimension6/4/2006
  Q: After a reboot, while installing debian on a dell dimension e510 i got a very annoying text every 2 ...
  A: Can you hear your hard disk going through a thermal calibration cycle when this happens? Do you ...
installing linux on sata5/25/2006
  Q: my question is that i want dual boot Xp with linux the problem is that our XP is working fine but ...
  A: Agrahari. I would explain and request more information but I think have discovered what is the ...
what to backup5/19/2006
  Q: Followup To Question - hi i'm new(ish) to linux and want to just clarify in my mind what i need to ...
  A: Sorry for the delay. In order to perform a backup you should include the following directories: ...
bash shell script5/19/2006
  Q: ! Thanks very much for helping out! I'm having trouble with a shell script that I need to write. I ...
  A: Very interesting your idea, unfortunately I will not be able to help you in the level you want. I'm ...
Installing UNIX5/17/2006
  Q: I have a laptop with windows XP home edition installed. Am planning to install UNIX.Could you please ...
  A: I will try to summarize all answers: First of all, you need tio install Linux instead of Unix ...
difference between the command options with a dash and without a dash ?4/10/2006
  Q: I figure out from your answer that the hyphen preceding ps's options is optional. Could you please ...
  A: Options of different types may be freely mixed, but conflicts can appear. There are some synonomous ...
difference between the command options with a dash and without a dash ?4/10/2006
  Q: I found another shell command without dash, do you know why ? ps xa | grep mysql Thanks,lzzzzHi, ...
  A: Yes, I know. As other commands the "ps" statement has its own nomenclature. The ps (i.e., process ...
difference between the command options with a dash and without a dash ?4/9/2006
  Q: I used the following shell commands to query a process, but I got different outputs. I wonder what ...
  A: The ps command varies significantly among Unix implementations. Each vendor incorporates its own ...
SUSE Linux 10.0 VPN4/7/2006
  Q: I am using SUSE 10.0 with the KDE GUI and KVpnc to try to access my office VPN (this works fine ...
  A: Ok I got Karl. Make sure you have all the requirements in order to make use of KVpnc. These ...
Linux4/6/2006
  Q: I want to learn to use Linux. But I want to avoid formatting my hard drive and then partitioning the ...
  A: There are many softwares that allow you do a partition process without formating your HD (and loose ...
Operating System4/6/2006
  Q: I need Comparison table between the following operating systems: DOS, Windows-NT, Windows-2000 ...
  A: This is relatively a complex question. I could not determine a table with this in an easy however ...

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