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Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

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I have a challenge related to updating a RedHat server.

On this server several packages need NOT to be updated because of application dependencies.

For this reason when I update the server I do something along the line of:
1) Check if any available patch can be seen, if so save result to file: sudo yum check-update | awk '(NR >=4) {print $1;}' > /tmp/update_packages
2) Then I remove the "blacklisted" packages from /tmp/update_packages
3) Run yum update against the obtained file

While this procedure is ok what can happen if one of the update packages has one of the blacklisted ones as dependency is that also the blacklisted one will be updated, right?

Is there any other procedure that you can suggest for this kind of scenario?

Thanks for your time and help.
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The 14th Annual Expert Award Winners
LVL 7
The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

My Recent Experiences with Linux!

As a staunch Windows OS supporter, it's been quite a few years since I've installed a Linux distro for myself to experiment with. Why? The installation process (at the time I experimented last time) was complicated and frustrating, as was just using Linux itself.

So, after reading a few questions and comments here and there, I decided it was time to give it another shot. I first downloaded and set up an Ubuntu Studio ISO in an Oracle VM Virtualbox VM. I was suitably impressed with both the installation and relative (and intuitive) ease of use.

Encouraged by that result, I decided to try another Linux distro called ChaletOS which claimed it would give newbies like me an easier transition to Linux by giving me a familiar GUI interface to Windows 7. Again, I wasn't disappointed. Linux distros have indeed come a long way since I last experimented.

Installation was an absolute breeze and puts both Windows 7 and Windows 10 installers to shame! Ease of use? Fantastic, especially with the ChaletOS build. I think I'm starting to understand why Linux tends to have such a 'cult' type following.

I've still got a lot to learn and experiment with, but my first impressions are nothing but positive. If you're in a similar position to me, I'd encourage you to give Linux another try. By setting up in a Virtual Machine, you have nothing to lose and potentially, much to gain.

Cheers...

Andrew
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Hi Experts

Could you clear what must to be done before to install Lubuntu 64 bits ?

After download Lubuntu installer at  Lubuntu  and obtain what I expect to be the installer:

img002
And when trying to install it a DVD burn software starts...

img001
So, is it obligatory to create a DVD instalator before to install it?

But, if I want to start from a pen-drive f.e. , do I have any workaraound?

Thanks in advance.
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Hi Team,

I need the difference between ftp and sftp commands .
0
Hi Team ,

I need clarification on ls -U command . The man pages say display with out sorting ,  Need an help on this command how this works. Not able to depict the output
0
I am getting error 1m ipv4 tcp listen drops
"the number of TCP listen socket drops during the last minute"
Last night i tried to enables https on server with following steps
Added virtual host file but i reverted the changes.
I also executed the following commands: is it efected something on server.
sudo iptables -A INPUT -p tcp -m tcp --dport 443 -j ACCEPTED
sudo lsof -iTCP -sTCP:LISTEN -P
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Hi All,

I have httpd with worker MPM. I do want to limit that to 1 process with root and only 3 child processes under my account (guest).

Sometimes, I could see 5 or 6 or 7 httpd child processes running on my box.

how to limit the child processes for httpd ?

How to configure/fix this ?

Thanks,
bvm
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I read the following guide on linode.com

https://linode.com/docs/getting-started/

Here is my /etc/hosts file

127.0.0.1       bandit
127.0.1.1       ubuntu.members.linode.com       ubuntu

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Open in new window



Should I list the ipaddress and the domain of every site that I am hosting for shared hosting?

Thanks
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We're having a problem with resolving a name to an address with a Linux apps.  We have an activity where we're moving images from one company network to another.  We have been trying to ensure all references to domain names have been changed, but we're still getting an error and so we're thinking we've missed one (or more).  Is there something that can trap attempts to resolve a name to an address we can turn on or check (either on our server or the network)?  I'm not even sure if a sniffer might help, but we're looking for any ideas that people may have.
0
Hi Team,

Can any one provide me the difference between

Difference between KSH , Bourne , Bash and C shell
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Free Tool: Subnet Calculator
LVL 12
Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Dear Experts

How to apply restrictions for the desktop/laptop users who use windows10pro and ubuntu desktop to install/remove any applications, only the system administrator should be able to install and update the systems, if user require application to be installed they should bring to system admin and system admin should only be able to perform this task,
1. how to achieve this for windows10 pro system
2. how to achieve this for ubuntu desktop system
please suggest thanks in advance.
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Hi Experts

Could you point the more convenient  Ubuntu version and  where to obtain it to fit  with this hardware?
(an old laptop)

img001
Thanks in advance!
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I need help creating traineddata for Tesseract.  We need to train it for Car VINs.  Linux server got it installed on V4 and I creayed a set of 12 pictures to work with.
In the end, it's to be used in PHP on a website. Everything is completed except it's not accurate enough using only english traineddata.

The existing documentation is too confusing for us.  

I am looking for more specific instruction or someone we could hire for a few hours to help on this.

Out traineddata is located in /usr/share/tesseract/tessdata/
0
shared linux hosting smtp/imap email

android email app

I can not see sent mail (sent by other devices)

I can only see the few emails sent by my app
0
is a shared webserver a good place to store .pdf or .doc files

if not linked to by using html, can search engine find.

i have robots.txt ask (not demand) that search engines shouldnt show but i know robots.txt is not a solution
0
I had this question after viewing Hydra Command line , Question.
hydra Child with pid 28359 terminating, can not connect XHYDRA

Very new to this and cant seem to find the answer to this, or a way for me to fix it....thanks
0
Hello, when i want to launch a new instance in my openstack system in Details i find: "There are no Availability Zones."

and when i launch the instance it stuck in "Scheduling".

Could someone please help me to resolve the problem ?

I'm Using openstack Queens under Centos 7.
0
I followed these instructions (http://directory.fedoraproject.org/docs/389ds/howto/howto-changeuid.html) to update the UID that runs the 389 Directory Server, but now I can't start the service.  I changed it to the svc389ds user account.  

Every time I try to start it, I get this error:

[root@VMUSTestCAS01 ~]# service dirsrv start
Starting dirsrv:
    VMUSTestCAS01...[18/Apr/2018:15:01:12 +0000] SSL Initialization - Configured SSL version range: min: TLS1.0, max: TLS1.2
                                                           [FAILED]
  *** Error: 1 instance(s) failed to start


Any suggestions?

Thanks!
- Christian
0
Is there a Universal, (free would be nice !) Hard Drive diagnostic program that will let me test drives for faults ? Either for Windows 7 / 10 or stand-alone ?
0
Free Tool: Path Explorer
LVL 12
Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

how to execute a custom shell script in startup while user's login to the system other than below method.

I had added my script in .bashrc & .bash_profile  but users are using  "bash --noprofile --norc" option, this won't read the startup files.

please help with your suggestions to achieve this.
0
CEO ran out of space on his beast.  System 76 Leopard Extreme is that system in his home office.  250GB SSD and 4x4TB drives. so 16TB total.  https://system76.com/desktops/leopard

I want to give him more[ max out] space with least amount of disruption.  Was thinking about this one: https://www.amazon.com/Gold-12TB-Enterprise-Class-Drive/dp/B075L6FJH8
But then I like to do make sure he can do it.  Would be much slower with external drive?  He does large programing models. So debating if i should go with internal or external drive.

Thoughts?
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How can I get a list of packages available for update on RedHat (using yum) and put the package list in a file for later use?

Basically I would like to be able to remove from the list a few names with a BASH script and then perform a yum update using the updated list.
0
I have some questions about RHUI (I just have the acronym and I know that is related to Operating System updates):

  • What is RHUI?
  • How can I check with a BASH script if it is working?
  • How can I check with a BASH script if there are any available patches?

Thanks for your time and input.
0
I would like to join Linux computers to a Windows domain.  Is this possible?  If so, how does one do this?
0
I have a Samsung Galaxy S9+.
Android Version: 8.0.0

I recently put a micro SD card in it and moved many apps to it.  One of them was Bejeweled Classic by Electronic Arts.  Later I noticed that the icon for it was missing, so I went to download/install it again.  When that happened I got a strange error message: "You cannot install this app because another user has already installed an incompatible version on this device"

NOTE: I cannot find the app on my Installed Applications list.

You cannot install this app because another user has already installed an incompatible version on this device
In the link above someone wrote:
What worked for me was: adb shell pm uninstall com.packagename

I have a Terminal Emulator to try that command, I just need to know the exact packagename.

Question: How do I get a listing of package names in the Terminal Emulator?

Screenshot of error message
0

LinuxSponsored by Flatiron School

65K

Solutions

32K

Contributors

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

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