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Unix/Linux OS/Questions Answered by Expert Denis Mello
| Subject | Date Asked |
| Using USB modem | 2/26/2011 |
| Q: Sir, I want to know that whether I can use tata photon plus (USB modem) in opensuse 11.3 or not as I ... A: To be honest, I never installed this modem on Linux (any distro). The readings I did told me that ... | |
| bandwidth management in linux | 2/17/2011 |
| Q: I have a Centos box, as my DNS Server, DHCP Server and Cache Server (using Squid) as internet ... A: I did not test any good application for what you want, so I can't not suggest something that can not ... | |
| ubuntu 8.04.1 | 2/9/2011 |
| Q: I'm stuck where it asks me to "login" I don't ever get aas far as password A: Uow Jim! Sorry for the delay. The login is generally "root" and "root". But this distro is a little ... | |
| boot ubuntu from usb stick | 2/7/2011 |
| Q: Denis Mello I'm trying to install a fresh copy of ubuntu from a usb stick I have only one iso file ... A: Greetings Jay. I know what is happening: the iso file will not boot your system Why? Because it is ... | |
| operating systems | 1/28/2011 |
| Q: I as of now only have basic computer skills but trying to learn more. I recently purchased a gateway ... A: First of all, I'm sorry for the delay Neil. Well, install both of them, because you can learn more ... | |
| Changing from Dual Boot | 11/7/2010 |
| Q: Okay i have a dual boot but now I never use Windows and only Linux, between the Ubuntu Software ... A: Yes, you can do it, off course. In order to achieve this goal, you may use a Partition Utility like ... | |
| Linux Laptop Issue | 11/7/2010 |
| Q: I have a dell inspiron mini with linux as the only OS. I forgot my admin. password. I reset my ... A: UOW! Such a nice issue you have. Someway Grub is not being able to recognize your system. I'd ... | |
| hard disk size | 12/31/2009 |
| Q: As the question asked before by somebody he has allocated only 5 GB of the disk space to linux and ... A: Yes, it is but you may refer to the installation instruction with regards to your distro. 3GB more ... | |
| wget something | 12/19/2009 |
| Q: I use wget http://www.some.net/subnet/attachment.php?aid=262007. But only to download HTML ... A: Sorry for the delay. I went in this webpage and there is not anything to download. There are many ... | |
| open sourse operating systems | 11/23/2009 |
| Q: Please let me ask two questions from you. question1: I recently heard about an operating system ... A: Greetings from Brazil. Question 1: Unfortunately the Chrome OS has not been launched. Yet. It is ... | |
| NOKIA 6120c AS MODEM ON UBUNTU 9.04 | 10/31/2009 |
| 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 FTP | 10/30/2009 |
| 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 FTP | 10/30/2009 |
| 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 FTP | 10/29/2009 |
| 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 stuff | 10/29/2009 |
| 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 script | 2/16/2009 |
| 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 ... | |
| wifi | 9/9/2008 |
| 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 Unix | 9/6/2008 |
| 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 systems | 3/26/2008 |
| 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 InfoLease | 3/13/2008 |
| 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+Security | 3/2/2008 |
| 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 time | 2/13/2008 |
| 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 time | 2/12/2008 |
| 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 editing | 2/8/2008 |
| 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 7.10 | 1/29/2008 |
| 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 exchange | 1/24/2008 |
| 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: ... | |
| Linux | 1/6/2008 |
| 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 10.2 | 8/12/2007 |
| 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 installation | 8/7/2007 |
| 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 node | 7/24/2007 |
| 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 help | 5/8/2007 |
| 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 application | 5/6/2007 |
| 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 Windows | 4/17/2007 |
| 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 management | 2/26/2007 |
| 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 network | 11/18/2006 |
| 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 color | 8/10/2006 |
| 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 packages | 8/3/2006 |
| 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 ... | |
| changemode | 8/2/2006 |
| 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 Installation | 7/26/2006 |
| 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 processes | 6/24/2006 |
| 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 ... | |
| internet | 6/12/2006 |
| 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 command | 6/7/2006 |
| 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 dimension | 6/6/2006 |
| 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 Linux | 6/6/2006 |
| 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 commands | 6/6/2006 |
| 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 Windows | 6/4/2006 |
| 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 dimension | 6/4/2006 |
| 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 sata | 5/25/2006 |
| 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 backup | 5/19/2006 |
| 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 script | 5/19/2006 |
| 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 UNIX | 5/17/2006 |
| 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 VPN | 4/7/2006 |
| 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 ... | |
| Linux | 4/6/2006 |
| 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 System | 4/6/2006 |
| 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 ... | |
Unix/Linux OS
Answers by Expert:
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.
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