Questions Tagged With linux

How mmpstrucdata and mmrfc5424addhmac works?

LilyChadha — Mon, 11 May 2015 05:59:31 -0400

I am trying to log messages with structured data . But it is showing null value for structured data. I am working with rsyslog 8.9.0.Can someone exlain me how these two modules mmpstrucdata and mmrfc5424addhmac will be effected?

Unable to get structured data in logged messages even after adding mmpstrucdata and mmrfc5424addhmac?(RFC5424)

LilyChadha — Mon, 11 May 2015 05:58:27 -0400

I am trying to log messages with structured data . But it is showing null value for structured data. I am working with rsyslog 8.9.0.Can someone tell me either i need to load some module or modify source to get structure data SD-IDs in logged message.

Template:

"<%PRI%>%TIMESTAMP:::daterfc3339%%HOSTNAME%%syslogtag%%APPNAME%%PROCID% %MSGID% %msg% %STRUCTURED-DATA%n”

getting message format as below: <142> 2015-01-29T06:43:53.081641-05:00 localhost login[2116]: login 2116 - [2116 : 2116 INFO]SERIAL Login from IP:127.0.0.1 user:admin -

configuration file --rsyslog.conf:

$ModLoad imuxsock # provides support for local system logging $ModLoad imklog # provides kernel logging support (previously done by rklogd) $ModLoad mmpstrucdata $ModLoad mmrfc5424addhmac

GLOBAL DIRECTIVES

$ActionFileDefaultTemplate RSYSLOG_DebugFormat . /var/log/debugfmt.log;RSYSLOG_DebugFormat

After loading mmpstrucdata and mmrfc5424addhmac i am getting structured data null.

loggedfs crashes system with “access: Transport endpoint is not connected”

sandric — Fri, 20 Feb 2015 00:12:37 -0500

I'm trying to use loggedfs to monitor my system changes, and it works great for some time, but then, eventually, it crashes and my fish shell starting to output "access: Transport endpoint is not connected" everytime I try to enter some command. To fix this, I have to login from other terminal as a root and run fusermount -zu <homeforlder> command to resolve that. Where should I look to find what causes such behavior of the system? Can someone point me where to look? Thx.

Command I run: loggedfs -f -p /home -c /home/sandric/loggedfs.xml

P.S. I actually working on web-frontend to loggedfs here and it crashes there, so if anyone can point it as an issue there, I will be appreciated too.

why my LFS system displays the my host system kernel version?

Gautama — Sun, 16 Nov 2014 13:02:02 -0500

Hello,

i am using Slackware 14.1 64 bit which is my host system.i build LFS/BLFS 7.6 on another partition,when i getting into my LFS/BLFS system i run "uname -r" then i getting my host kernel version "3.10.17" but my LFS/BLFS kernel version is "3.16.2".please help me how to solve this issue.thanks in advance.

HOW TO USE ALL INODES IN MY SYSTEM

ashokkrishna — Fri, 24 Oct 2014 10:36:39 -0400

MY UBUNTU PC HAS THE FREE INODES I WANT TO USE ALL OF THEM WITH A AUTOMATIC SHELL SCRIPT. HERE ONE THING I DON'T WANT TO CREATE ANY FILE THAT MEANS WITHOUT CREATING ANY FILE I HAVE TO USE ALL FREE INODES IS THERE ANY COMMAND ? OR SCRIPT?

Compare two CSV files

apoorva joshi — Thu, 18 Sep 2014 03:10:44 -0400

Hi, I have to compare two .csv files and get the output in other file in the given format.

First column in provided files would be unique.

If a new line is added I want A followed by "," and then followed by entire new row. If a line is modified I want C followed by "," and then followed by entire modified row. If a line is deleted I want D followed by "," and then followed by entire deleted row.

File 1

aa, bb, cc, dd, ee

bb, ww, ee, tt, yy

cc, vv, vv, vv, vv

File 2 bb, ww, ee, tt, y1

cc, vv, vv, vv, vv

nn, bb, nn, cc, bb

So output be like

D, aa, bb, cc, dd, ee

C, bb, ww, ee, tt, y1

A, nn, bb, nn, cc, bb

what are the things needed to configure apache server in linux

minlinux — Thu, 29 May 2014 11:39:36 -0400

Hello folks,

I have configured an Apache server for the first time..!!! I'am trying to setup a Apache server which can be accessed by everyone. I have configured Apache successfully. But I'am not able to view my webpage publicly. Do i need to register a Domain and do i need a specific ip from my internet service provider. Any help would be appreciated...!!!

Printer driver for Canon MP230

Carolwoowoo — Wed, 05 Mar 2014 10:34:12 -0500

I need to find a printer driver for Canon MP230 All In One printer. I have just installed Linux Lite 1.0.8.

Thank you

Carolwoowoo

Is there a benefit to changing my user ID from below 1000 to over 1000?

KenJackson — Fri, 20 Dec 2013 12:06:16 -0500

Years ago when I first installed Linux, /etc/login.defs set UID_MIN to 500, so I ended up with a user ID close to that. But now the value is 1000, so every time I install a new system I have to be careful to specify my existing user ID so I don't end up with 1000.

I've experienced difficulties interacting between networked PCs when my user had a different ID on the two machines (can't remember exactly what). So I'm careful to always keep them all the same.

Is there any advantage to changing them all to a number above 1000? Why was it changed? Is there any software package that installs a system account user ID above 500 that might clash?

I usually use Fedora Linux, though I've experimented with a number of others and this seems to be consistent across the field.

How do I install TazPkg in SliTaz Linux

sspoke — Thu, 24 Oct 2013 19:54:42 -0400

How do I install TazPkg in SliTaz Linux?

Usually to install tazpkg packages you need TazPkg but I unsintalled TazPkg because it was broken now how do I install it again?

How to create a short path?

gapry — Mon, 30 Sep 2013 11:35:16 -0400

We have so many useful folders, which are in different path, for our working in Linux.

For example :

$cd ~/Documents/Courses/EDX/physics2013/
$cd ~/Documents/Courses/Company/OpenGL/Proj/...
$cd ~/Documents/Courses/Freelance/Android/Proj/... ....

How to create some short paths which can be used like

$cd edxPhy2013
$cd cglProj-v-2.13
$cd flAndrProj-v-1.1

How to properly set default permissions inheritance on linux server with windows clients

Joshua Gramlich — Thu, 25 Jul 2013 15:54:19 -0400

I'm trying to set up a file server in our office and am having issues with default file permissions being inherited from the parent directory. I want the directory permissions to be inherited by all directories and files created in a directory. When a user creates a file or directory within my folder, I want the user and group permissions to both be rwx...perhaps rwxrwx--- as I don't care about "other".

I've been trying setfacl, chmod g+s and others but it's just not clicking for me for some reason. setfacl seems to work and getfacl is reporting what looks to be properly:

...
# owner: nobody
# group: Employees
user::rwx
group::rwx
other::r-x
default:user:rwx
default:group:rwx
default:other:r--

I want all group members to have rwx privileges on all files and directories made underneath our shared folder.

Here's one of my big confusions: a text file made from the terminal window on the linux server comes back with default permissions of rwxrw-r-- and a file made in the same directory by the same user account gets me a permission of rwxr--r-- when the file is created from a Windows client...neither of which is the desired outcome, but I would expect the permissions to be the same whether created locally or remotely.

Thoughts anyone? (am checking umask in samba config right now...)

update: the smb.conf file was specifying a restrictive mask, thus the difference between windows and linux. I still cannot figure out why it's not setting default permissions on files created/copied in the directory though.

How take a screenshot of 1 screen when using two screens on Linux Mint ?

Srinivas Suresh — Wed, 01 May 2013 11:08:05 -0400

I am using a laptop and I've connected my monitor to it to "extend" my screen . Effectively my screen is now twice as wide. I want to take a screenshot of the second screen alone. Hitting print screen takes a vertically compressed horizontally elongated screenshot. as does the gnome screenshot capture tool . I tried to use the capture an area feature but that just warps the image so bad that it becomes useless. Can anyone suggest a good solution ?

I'm sorry if the question is n00b. I'm very new to Linux.

Is there any website having command line environment of Linux, for practicing commands?

Avian — Wed, 10 Apr 2013 03:41:49 -0400

I was wondering whether I could practice LINUX commands and shell scripting, online, over a website which could provide me an editor to practice them. And I know that probably the easiest thing to do would be to download a Linux LIVE CD and then practice shell scripting, but apart from it, I want to practice them online, anywhere I want, anytime I want and on any system, without bothering about booting from a LIVE CD. Thanks.

Issues when running autogen.sh

isha — Tue, 12 Feb 2013 16:18:31 -0500

I have downloaded R tree from http://libspatialindex.github.com/

Since on running ./autogen.sh I was getting file/folder not found, therefore I downloaded the file autogen.sh from the github repository given below:

https://raw.github.com/libspatialindex/libspatialindex/9a5a2f4d83c3ec7be4dbf2c8a86341703d837185/autogen.sh

Now when I run ./autogen.sh I am getting "Permission denied" And if I run sh ./autogen.sh I am getting:

 glibtoolize or libtoolize not found. Giving up!

Please suggest what should I do now

Policy based routing - configuration with openvpn.

majkelos — Fri, 25 Jan 2013 06:01:02 -0500

I just want to check with you if the config i have made is correct.

I have my goflex with archlinux installed on it. The NAS is connected to the router (router IP is 192.168.100.1)- the NAS IP is 192.168.100.107.

I have the dyndns established so i can connect remotely to my NAS via dlinkddns address. On my router there is the port forwarding set up so all the packets are reaching the NAS and i can use PyLoad and other similar services.

Now i want to establish the openvpn connection from my GoFlex so all the transferr from and to it is secure. Easy enough - i'm just using the

openvpn servername.ovpn

And this is working well - i'm being connected, my address is changed and everybody's happy. But now when i'm trying to connect to my NAS via ddns - it is not giving me the connection. Basically what is happening - i'm sending request via my usuall IP and the NAS is sending the response via my openvpn.

Just for a record these are some basic infos from my machine after openvpn connection:

[root@alarm ~]# ip route
0.0.0.0/1 via 10.200.4.1 dev tun0
default via 192.168.100.1 dev eth0  metric 202
10.200.4.0/22 dev tun0  proto kernel  scope link  src 10.200.5.8
77.92.92.161 via 192.168.100.1 dev eth0
128.0.0.0/1 via 10.200.4.1 dev tun0
192.168.100.0/24 dev eth0  proto kernel  scope link  src 192.168.100.107  metric 202
---------
---------
[root@alarm ~]# ip rule
0:      from all lookup local
32766:  from all lookup main
32767:  from all lookup default
Now i removed the 0.0.0.0/1 via 10.200.4.1 dev tun0 rule:

ip route del 0.0.0.0/1 via 10.200.4.1 dev tun0 And i added 2 new tables called - moja and mvpn in the /etc/iproute2/rt_table file.

Then i set up (i think) source based routing - based on interface - saying that all the traffic comming from eth0 is responding to eth0 and all the traffic comming from tun0 is responding through tun0. :

ip rule add dev tun0 table mvpn
ip route add default dev tun0 table mvpn
ip rule add dev eth0 table moja
ip route add default dev eth0 table moja
ip route flush cache

This seems to work, i mean now when i'm ssh from my NAS and check ipecho.net it gives me different ip (vpn ip) than when i'm checking it via my laptop. So this would be my downloading IP.

My only concern is how to check what is my uploading IP? And assuming it's ok how to make this whole procedure more automatic - preferably together with openvpn connection ? Any tips or ideas?

Ok maybe i'll post the final configs:

[root@alarm ~]# ip route
default via 192.168.100.1 dev eth0  metric 202
10.200.4.0/22 dev tun0  proto kernel  scope link  src 10.200.5.8
77.92.92.161 via 192.168.100.1 dev eth0
128.0.0.0/1 via 10.200.4.1 dev tun0
192.168.100.0/24 dev eth0  proto kernel  scope link  src 192.168.100.107  metric 202
------------
-----------
[root@alarm ~]# ip rule
0:      from all lookup local
32764:  from all iif eth0 lookup moja
32765:  from all iif tun0 lookup mvpn
32766:  from all lookup main
32767:  from all lookup default

Cheers,

Post scriptum: Ok, what i did is i putty to my NAS and then i ssd to my dyn-dns addres - after that i have checked the ssh log file (var/logs/auth.log)

how to make managed and master AP to talk to each other

Samprat — Sun, 16 Dec 2012 17:18:17 -0500

Hi Guys,

I have a peculiar problem and i tried my best to figure out problem but i am unable to do so.

Problem -> I Have two devices with access -point n both of them say router A and device B that test connectivity and functionality of Device A.

I have turned access-point of B into managed mode so that it accepts connection from Router A. everything works fine and it connects to router A and i get correct ssid of router A.

Now my text task is to measure speed or transfer some files. When i ping from B to A or vice versa it failed . I am unable to find the problem. IN B wlan0 is connected and has ip address of 192.168.200 and subnet mask of 255.255.255.248 and external ip address of say something like 10.50.120.10

A has wlan3 is connected has ip address in range 192.168.2.1 and subnet mask of 255.255.255.255

Could you guys please let me know who would i make them talk to each other Thanks and regards, Sam

To measure throughput of DUT from linux server

Samprat — Fri, 07 Dec 2012 04:36:34 -0500

Description of project->I have a test-tool to which DUT connects. The test-tool has an access-point in it and once DUT get connected to it via mac address we check RSSI and some other features of WiFi of DUT. Now I am wondering is there is any way I can measure throughput of Device under test via mac address of DUT from server side.

Test tool has LINUX fedora 11 in it and major coding is done in c/C++ and json command.

Previously, I have tried to install ftp server on test tool and DUT can connect to it and we can measure the throughput or data transfer rate, but this is not feasible solution as it requires lot of intervention from DUT.

What I am interested in is 1) To run some script on server side /test-tool and it gives me throughput of bandwidth of connected device may be via mac address of DUT OR 2) Server script transfer some files/packets to DUT and we can measure the throughput. Coding is not a major challenge at this stage , I just need some tool which requires minimum intervention from DUT.

ftp server on linux to send files or receive files from client rather than other way round

Samprat — Thu, 06 Dec 2012 10:28:32 -0500

Hi Guys,
SERVER -> Linux Fedora 12
DUT -> could be based on any platform.
. I want to test the DUT for transferring of files to and from server.

I can easily test the scenario when client wants to upload and download the files from the server.

What I want is suppose there is a GUI on server side and executing command on GUI , the server automatically sends the file to the client side and record the download or upload logs . I don't want client to initiate the transaction.

is this is possible ?

Please share your thoughts.

Thanks and regards,
Sam

How to determine the linux flavour of my box?

houmie — Wed, 28 Nov 2012 14:43:35 -0500

Hi,

I have a diskstation and would like to know what linux flavour it is:

I ran the following command and got this:

DiskStation> uname -a Linux DiskStation 2.6.32.12 #2647 Wed Sep 26 03:18:29 CST 2012 armv5tel GNU/Linux synology_88f6282_212

But it still doesn't really get me further.

Thanks

Setting up Kerberos in NIS for Linux OEL5x

Balualways — Tue, 20 Nov 2012 10:44:21 -0500

I had configured the users as NIS in my Oracle Enterprose Linux 5x server. Users are looking good but I am facing issues with kerberos. I am getting a "kshd: Login denied " while trying to login to my server using kerberos.

kinit user@DOMAIN.COM # Alows me to login krsh -l user MyLinuxServer 'ls -l /tmp/Filename' kshd: Login denied.

Any help or documents on configuring kerberos on NIS based Linux would be appreciated.

Two virtual networks over one LAN?

MisterK — Wed, 14 Nov 2012 02:37:34 -0500

My home-network is somewhat complex. I have a cable-modem which via a switch is connected to my router/firewall for serving internet to my actual LAN, but the same switch also connects via powerlan several set-top-boxes to the same cable-modem. This means that near some TVs I have two powerlan adapters, one serving the needed connection to the set-top-box and another giving internet access to PS3, Wii, XBox, ...

The cable-modem itself gives different IP addresses based on the MAC address of the client. As such the set-top-boxes get a 10.x.x.x address and other clients (my Linux firewall) get actual global internet addresses. So, there are already two IP ranges going over the same network at the end of the cable-modem, but since I'm not sure of the safety of that part of the network (read: I don't trust the cable company), I want the rest of my network behind the Linux firewall ...

So, to finally come to the question: is there a way to have the cable-modem connect directly to my Linux firewall (so getting rid of the switch inbetween) and then have the Linux firewall pass traffic for the set-top-boxes (so specific MAC addresses) as-is to the LAN, including that those devices would then get a DHCP address directly from the cable-modem (through the Linux "bridge"), while at the same time for all other devices in the LAN the Linux firewall actually acts as firewall, proxy, dhcp server, etc. giving out 192.168.0.x addresses and having itself one single real internet address which it gets via DHCP from the cable-mode?

If I setup a bridge between WAN and LAN, I assume I can still filter on that bridge via iptables, but can I run a dhcp client on one end of the bridge and a dhcp server on the other? If so, how? Anyone able to give me a clear description on how to get something like this up? I'm going to run Ubuntu Server on the firewall (which also acts as home-server and controller for my solar-panels, so a full-fledged Linux is wanted), but if I can get general instructions to get me on the road, I probably can figure out the Ubuntu specifics myself...

Thanks in advance, K

rdesktop to update windows machine remotly

Ratnam — Mon, 12 Nov 2012 06:58:05 -0500

I want to use psexec for managing remote systems(install some software on the remote system).I see a requirement that file and printer sharing to be enabled in the remote system,,for psexec to be working. I would like to take remote session into Windows ,using rdesktop and using -s flag of rdesktop ,want to execute a batch file or command like 'netsh' to open ports in remote machine so that the requirements for psexec are fulfilled and I can use psexec to exercise any intended management controls

Looking for Linux (Ubuntu) Open Sourced Applications on ITIL processes

Derrick — Tue, 23 Oct 2012 10:40:20 -0400

Hi All, I'm new to this forum. I am tasked to look for ITIL process open sourced applications that are based off linux. The application is going to be used in an IT helpdesk environment. Please do help out if anyone knows of any freeware that I can used in a Ubuntu Linux environment. Thanks!

cronjob to run a command at first friday of each month

www_9px_ir — Thu, 04 Oct 2012 11:03:50 -0400

hi there
i use 3 13 1-7 * 5 in cron jobs to run my command at first friday of each month,
but i see that the command run on days 1 - 7 and also all fri day!
then i found below note in wikipedia:

if both "day of month" and "day of week" are restricted (not "*"), then either the "day of month" field (3) or the "day of week" field (5) must match the current day.

so, how i can solve the problem?

Grub lost after windows 8

mhtsaras_aek — Sat, 29 Sep 2012 11:49:37 -0400

Hi there , i used to have installed on my pc backtrack 5 R2 + ubuntu 11.10 when i installed windows 8 i lost grub

using ext2explore and other browsing tools , i can see all linux partitions , with files in there. using super grub disk , i am trying to reinstall grub , but it says , file not found Ass seen here Any ideas ?

driver for Bluetooth 4.0. Does existing driver( which supports 3.0 ) wil support Bluetooth 4.0?

Samprat — Mon, 24 Sep 2012 06:49:06 -0400

Hi Guys ,

Hi Guys , I have a embedded system with linux fedora 12 os and has Bluetooth 3.0 . The embedded system is used to make BT connection. Everythng works fine

Now , I have been asked by management to give rough estimate of how much time it will take to upgrade it to BT4.0. Since we do not have BT 4.0 chip , I am not sure how to give them the estimate. In my embeded system. I have following packages installed , so I am wondering does these existing package wil support BT4.0, if not , could guys please point me to from where I will get drivers and how to install in fedora 12.

bluez-4.58-1.fc12.i686
bluez-alsa-4.58-1.fc12.i686
bluez-libs-devel-4.58-1.fc12.i686
bluez-compat-4.58-1.fc12.i686

And on doing
lsmod | grep "blue"

I got following messsage

bluetooth 74189 7 rfcomm,sco,bnep,l2cap,btusb
rfkill 13401 3 cfg80211,bluetooth

dmesg | grep Linux Linux version 2.6.32.26-175.fc12.i686.PAE (mockbuild@x86-17.phx2.fedoraproject.org) (gcc version 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) ) #1 SMP Wed Dec 1 2

Thanks and reagrds, Sam

bluez-4.58-1.fc12.i686

bluez-alsa-4.58-1.fc12.i686

bluez-libs-devel-4.58-1.fc12.i686

bluez-compat-4.58-1.fc12.i686

And on doing

lsmod | grep "blue"

I got following message

bluetooth 74189 7 rfcomm,sco,bnep,l2cap,btusb rfkill 13401 3 cfg80211,bluetooth

dmesg | grep Linux

Linux version 2.6.32.26-175.fc12.i686.PAE (mockbuild@x86-17.phx2.fedoraproject.org) (gcc version 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC) ) #1 SMP Wed Dec 1 2

Thanks and regards,

Sam

Unix Commands - Find help

nickcorin — Sun, 15 Jul 2012 20:26:39 -0400

I'm trying to learn UNIX commands and I'm playing this game to learn and I'm really stuck at the moment. I'm in a server through ssh and the directory is full of random files and folders and the password for the next level is inside one of the files. I have been told that the file has the following attributes:

human-readable 1033 bytes non-executable

I am guessing that I should use the 'find' command and I tried " find ! -executable " but that returned a load of files. The only human-readable help I can find in the manual or online is printing out the file sizes in human readable. So I'm a bit lost there?

Also I did try " find ~ -size 1033b " but that returned nothing. But when I tried " find ~ -size -1033b " it returned every file in the directory.

Any help would be appreciated. Thanks in advance.

Show message on runlevel change

Peter Elzinga — Thu, 21 Jun 2012 19:21:07 -0400

I have an assignment where i have to show a message when entering runlevel 3 and when exiting runlevel 3. I have created the script in init.d:

case "$1" in
  start)
    echo "Welcome to RC3"
    ;;
  stop)
    echo "RC3 says goodbye"
    ;;
esac

exit 0

And created a symbolic link in rc3.d.

however: when changing runlevel the message is not shown

How do I install Sandisk card reader on Suse 12.2?

MMCAELTH — Thu, 21 Jun 2012 03:39:20 -0400

Prior to installing Suse 12.2 My Sandisk card reader worked fine. Since installing 12.2 it does not work at all. Yast hardware info finds the reader, but there is no entry for it (as for scanners & other devices). Fstab has no data concerning the reader. How can I geT Sandisk to work again? MANY THANKS FOR AMY HELP YOU CAN GIVE!!!