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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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Newbie here.

I am trying to set up shares from both windows and Kubunu to allow data transfer......
My attempt at setting up a share in Kubuntu using Konsole, has resulted in a "shareFolder" in the desired location. I have set an smb password - all good.
Have "checked" the folder settings using the Kabuntu GUI and permissions and sharing seem to be set OK.
However from windows - can see and map to the folder - permissions (using the username / password combination) set up - fails to authenticate.
Set up a shared folder in Windows - but Kubunu does not see the folder when I am try to "map or discover" from Kubuntu.
So two issues here.
Windows to KUbuntu - permissions issue - as I see it,
Kubuntu to Windows -probably needs to be re-set up.

Running Win10 - latest
Kubuntu - older(??) flagging an Os update - though this is probably irrelevant in this scenario.

Any wizard out there willing to take on this onerous task?
All assistance gratefully received.
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VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

Hello ,

I want to appy a system command with arguments from variables but i could not find an example any body has experience about this ?


This is what i want to do
system("/bin/bash  /etc/a.sh   %d %d",val1,val2);
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Hello ,

We are facing with a strange issue  , first of all i need to be sure  , if packet marked with SACK_PERM then does it really need to have TS , WS ?

there is nothing between SACK and MSS values  02 04 05 b4 04 02
0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 3c 7d 23 40 00 2e 06 47 3c 67 f6 c9 98 b9 09  .<}#@...G<g.....
0020   9d c4 81 5b 00 50 39 00 25 a3 00 00 00 00 a0 02  ...[.P9.%.......
0030   72 10 bb 2c 00 00 02 04 05 b4 04 02 08 0a 59 97  r..,..........Y.
0040   58 80 00 00 00 00 01 03 03 07                    X.........

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Before Sack_Perm there is additional :      02 04 05 b4   01 01 04 02
0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 30 a6 03 40 00 7e 06 c9 84 bc 47 5a 47 b9 b6  .0..@.~....GZG..
0020   bc fa c4 22 00 35 64 18 ae 7c 16 a5 e2 49 70 02  ...".5d..|...Ip.
0030   20 00 06 04 00 00 02 04 05 b4 01 01 04 02         .............

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what is this between MSS & SACK options in the packet ?


Screen-Shot-2017-08-14-at-16.46.45.pngScreen-Shot-2017-08-14-at-16.46.11.png
0
Hello there,

I am new to Linux world and I have installed ubuntu server and then using apt-get installed apache server. Now I want the apache server to run everytime I reboot the server and it is not set on manual mode. How can I check this and be sure it is on automatic and not manual mode.

cheers
Zolf
0
Is this a mistake or  am i  checking sth wrong , how should be a packet with missing checksum ?

0000   a0 36 9f 55 7c aa dc 38 e1 ac 9b 89 08 00 45 00  .6.U|..8......E.
0010   00 25 8b cb 00 00 fd 11 d7 aa 89 3c 5a 64 b9 b6  .%.........<Zd..
0020   bc fa fc 5d 69 87 00 11 00 00 ff ff ff ff 55 38  ...]i.........U8
0030   55 76 03 00 00 00 00 00 00 00 00 00              Uv..........

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Screen-Shot-2017-08-13-at-17.28.06.png
0
Hello ,

For a project we are using ip.h library of the linux.
As far as i check the library , http://www.cse.scu.edu/~dclark/am_256_graph_theory/linux_2_6_stack/linux_2ip_8h-source.html  , i could not find a way to check Window size , is there any way to read complete packet hex with this library and get the window size of packet hex like given below :

			long dec_Window_size = std::stol (packet_hex.substr(96,4),nullptr,16);

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0
I  have a few question for selection of drop policy applied place.

1. Which one first apply the drop rule ?
2. iptables and nftables are user space appliances but i do not know deeper , are they work in kernel space and pipe the requests from user space or are they work completely after kernel space ?
3. Is there any possibility to drop a packet before any kernel space module ,i tryed with netfilter and drop an ip xx.xx.xx.xx and i realize that tcpdump still reading the traffic but iptables not. So the traffic is passing to kernel space still on netfilter.
0
Hello ,


Is there any body know a way to send live message to kernel module like the given below. I want to send a message to it and let it write to logs the message
My message will be sended from the user space and the kernel module is working on kernel space




#include <linux/module.h>	/* Needed by all modules */
#include <linux/kernel.h>	/* Needed for KERN_INFO */

int init_module(void)
{
	printk(KERN_INFO "Hello world 1.\n");
	return 0;
}

void cleanup_module(void)
{
	printk(KERN_INFO "Goodbye world 1.\n");
}

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0
I had my Apache2 running good on my development machine.

I changed some site configurations and started running the noip.com's client, even though this is a production machine, to see if I could access it from the world wide web.

I tried to install it in terminal and came across the following error

brian@brian-XPS-13:~$ sudo service apache2 start
[sudo] password for brian: 
Job for apache2.service failed because the control process exited with error code. See "systemctl status apache2.service" and "journalctl -xe" for details.
brian@brian-XPS-13:~$ sudo apt remove apache2
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  apache2-data apache2-utils
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
  apache2
0 upgraded, 0 newly installed, 1 to remove and 121 not upgraded.
After this operation, 501 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 278612 files and directories currently installed.)
Removing apache2 (2.4.18-2ubuntu3.4) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for ufw (0.35-0ubuntu2) ...
brian@brian-XPS-13:~$ sudo apt purge apache2
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  apache2-data apache2-utils

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0
I'm trying to test network connectivity from an Ubuntu 16.04 server to a Windows 2008 server for a piece of software I'm running.  I have a share on my Windows Server that I need to access from the Ubuntu server, I'm not a Linux guy, how can I go about doing this, everything I find on Google is from Windows to Linux, I need Linux to Windows
0
Will your db performance match your db growth?
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Will your db performance match your db growth?

In Percona’s white paper “Performance at Scale: Keeping Your Database on Its Toes,” we take a high-level approach to what you need to think about when planning for database scalability.

This organization doesn't have an Active directory in-house presence.  Azure AD in the cloud.
They want to implement Radius.  Is there an option having Radius without an AD and having data synchronized?  What are the other options?
0
hi all,

I search from internet about MySQL cluster Auto installer:

https://www.youtube.com/watch?v=nYiIwgjcRWI

but I am install MySQL on redhat linux and I am not sure how the guy in the video execute the auto installer in windows? how it works ?
0
Is there a way I can add a linux box to my domain network for monitoring purposes?  I'm a complete novice on this particular topic and don't know if my question even makes sense, but I have lots of spare machines I could use and dozens of Linux software disks that have come with my subscriptions to LinuxUser  and to Admin.

Is there a trade pub that would cover this, or a white paper?
0
Hello,

I have a question about vmware  p2v/v2v converter question.  When start the p2v in linux, does it create temp image and do SCP to the destination host?
0
i am in particular folder say abc.

I did ls -ltr where there are bunch of files.

i want to search all the files starting with file name xyz alone ignoring other starting with pqr etc(ignore pqr000.log.20170806.gz etc).
My search should result like

xyz123.log.20170806.gz
xyz456.log.20170806.gz
xyz789.log.20170806.gz etc



What is the command i have to use for that.

is it grep or find or something else.

when i gave grep xyz.* it did not gave any result.

how searching inside a file content is different from search outside on unix file names.

any good link on these commands? please advise
0
Experts, how can we use the snmpd command to find a server's OID string?

We are testing Zabbix but seems like it does not have snmpwalk like the document. We tried to find and install it but could not. Many thanks!
0
I live in the dorms and am looking to start learning server administration. The only problem is it's all wifi and we don't have ethernet.

I bought a $30 wifi to ethernet adapter but it doesn't connect to the school's network and it only sometimes connects to a mobile phone.

I was thinking I could buy one of those USB adapters and install the driver (obviously it would be installed already on Ubuntu Desktop).

Would this work?

Also the device needs a Mac Address for the wifi network to accept it. Do these USB devices have Mac Addresses?
0
We have a VTiger 6.4 running on a CentOS linux with a customer portal enabled.

We are unable to send out the customer portal password emails. Internally the password emails work, but if we enter an external email address the e-mail will not send.

We are also running an Exchange 2016 server.
0
Hello,

I see following entry in my RRD file
                        <!-- 2017-08-02 13:30:00 UTC / 1501680600 --> <row><v>9.9500000000e+01</v></row>
                        <!-- 2017-08-02 13:31:00 UTC / 1501680660 --> <row><v>9.7400000000e+01</v></row>
                        <!-- 2017-08-02 13:32:00 UTC / 1501680720 --> <row><v>9.9416666667e+01</v></row>
                        <!-- 2017-08-02 13:33:00 UTC / 1501680780 --> <row><v>9.3583333333e+01</v></row>
                        <!-- 2017-08-02 13:34:00 UTC / 1501680840 --> <row><v>1.0000000000e+02</v></row>
                        <!-- 2017-08-02 13:35:00 UTC / 1501680900 --> <row><v>9.9700000000e+01</v></row>
                        <!-- 2017-08-02 13:36:00 UTC / 1501680960 --> <row><v>9.8366666667e+01</v></row>

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I would like to understand what is e+01 or e+02 here? Thanks!
0
Free Backup Tool for VMware and Hyper-V
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Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

CVE-2014-6277

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6277

I want to apply above CVE to centos.
0
Hi experts,
Have a schedule job which I would like to execute at 2am with crontab expression (command).

Question is How can I write it to execute only once please?

I know it defeats the purpose, but how to come up with the cmd pls

Eg. If I schedule it for tomorrow 2am, it should execute at 2 and it should never re-execute

Thanks in advance
0
i just got a hand me down surface RT. twice when the battery was allowed to completely die, the device got stuck in an auto repair fail. i was able to reset the machine both times though it took multiple times each time (maybe unable to complete process until fully charged?), but the second time the machine shut down when i was running through the setup steps. when it came back up it was back in the failed auto repair cycle.

my husband said when he looked at it he found two recovery drives and deleted one. now the machine is requiring windows media.

i created a bootable usb but it fails after completing about 65% of the process.

i tried using the command prompt to rename system to system .001 and software to software.001 but it said the later was in use.

tried using a linux boot usb but woudlnt work then found articles online that stated microsoft purposefully locked down surface RTs from being able to be used with linux.

is it a paperweight at this point or is there something i am missing that i can try?
0
Hi Experts,
could you pls advise how to install 32bit unixODBC driver on 64bit Oracle Enterprise Linux using yum. software which I'm planning to install on this 64 bit server only support 32 bit driver. Hence need to install

unixODBC-2.3.1
unixODBC-devel-2.3.1

Thanks in advance
0
my understanding of trap is that if some event happens then the agent will send the trap event to NMS server and here community string is configured on agent. what is the use of community string here?
0
hi,

I am going to setup a MySQL multi master setup as a POC, how many server we need?

should use redhat linux, right ?

other than MySQL, must use enterprise edition I think and what else I need ? what MysQL component also need to test up this kind of multi master MySQL platform?
0

Linux

64K

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.