Ubuntu Servers :: Run Scripts When Ssh User Logs In?
Nov 6, 2010
I'm a bit of a unix noobie trying to manage a small ubuntu server. I want to run a bash script automatically after an ssh user logs in. For example, after they log in and the default welcome message is displayed, I want to run a script that displays some server statistics since the last session. I made an alias to the script, and I could run it manually after I log in, but it's a bit of a hassle. Is there any way I could do this?
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Dec 3, 2010
We have a backup program that works with HP's ultrium tapes that whenever it's failing it's sending an error to the root's system logs. Now if I run mutt as root I can see the system logs and it's very easy to pinpoint any backup error messages.
Is there any way to copy all these system messages to another user as well so that someone with no root access could run mutt as well and check for these logs daily?
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Aug 21, 2010
I've searched the web and these forums and I don't seem be the only one with this problem yet I couldn't find a cure for it; 2 users are logged in, one of them logs out and the screen goes blank. Nothing works except shutting off the computer manually.Does anyone know if a cure has been found for this problem by now?
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Sep 10, 2010
I'm running ubuntu server on a home server which runs samba, ftp, and bittorrent 24/7. there is no need to be using the graphics capabilities of the system by having a desktop environment active 24/7 so to save power when i'm not using the desktop, i stop the kdm/gdm and x. This can be done easily by sudo start/stop kdm/gdm/x etc., but there are users in my home who are unprivileged on this computer but who would still like to use it from time to time and rather than having me login every time and start x for them, I would like to find an automatic solution to the problem.
I tried setuid scripts (which i found out fast didn't work), I tried compiling a small c program (again, setuid then start x) which i couldn't get to work, I also tried looking for a signal to send upstart when a specific user logs in so the appropriate environment could start but couldn't find one. I've only just started getting into upstart scripting and despite what I know.
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Mar 16, 2010
I recently installed Suse Linux enterprise Desktop 11 on my box. I created an user and logged in first time into a GNOME session without any problems. Last time I logged in I selected the session as TWM and that got me into the T windows manager just fine. Now when I log out and try to log back into a GNOME session, it will still log me into the TVM sessionI have tried restarting the boxHowever, when I remote log in to the machine it will let me get on the GNOME session just fine. I'm guessing this is probably a really simple fix, however I am a Linux newbie and doing a google search isn't yielding me what I'm looking for.
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May 1, 2011
When I try to play a video in vlc, totem or banshee, it immediately logs me out. Sometimes this happens when I try to full screen the video. This seems to happen only after upgrading to ubuntu 11, and happens for multiple kinds of files, like avi and m4v. The motherboard is Asus a8v-mx. How to fix my ubuntu installation
Here are the relevant entries from syslog:
21:12:27 enlightenment kernel: [488.157457] powernow-k8: Hardware error - pending bit very stuck - no further pstate changes possible
May 1 21:12:27 enlightenment kernel: [488.158634] powernow-k8: transition frequency failed
May 1 21:12:27 enlightenment kernel: [488.264015] powernow-k8: failing targ, change pending bit set
May 1 21:12:27 enlightenment kernel: [488.306466] agpgart-amd64 0000:00:00.0: AGP 3.0 bridge
May 1 21:12:27 enlightenment kernel: [488.306489] agpgart-amd64 0000:00:00.0: putting AGP V3 device into 8x mode .....
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Jun 22, 2015
So the question is simple what I need is to run file.sh after user logs into desktop LXDE.
Ive been trying whole day tried to put my file.sh into /etc/init.d and ever created symbolic link to /etc/rc4.d etc..
BUT after I log into desktop nothing happens?
I am coming from ubntu there it was easy just add that script into startup applications.
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Mar 3, 2010
I'm trying to set up automatic recording of user sessions when they login without their knowledge. I tried sticking the script command into /etc/profile and but that didn't really work. I also tried /etc/bashrc but that had the same affect.I have also tried setting the shell in /etc/passwd to SHELL=/bin/bash /usr/bin/script -q /testing.txt.
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Dec 14, 2010
When I start my ubuntu linux system it automatically logs into a user (not root) in graphical mode and it does not asking for any password. when I try to go to the command prompt the password is required. How do I give password for my user. The provider installed the system and not me..
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Oct 31, 2010
Since Port 80 and 443 are the only ports I have open, how is it that an IPAddress can hit my server yet not appear in ANY logs ?
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Jan 3, 2011
I have configured my Cisco ASa Firewall to send its logs to my ubuntu server in /var/log/cisco/ I see the logfiles populating in real time, but i can also see all the logs are also wtitten to /var/log/messages. How can i make sure i do not have a log redundancy? I dont want my firewall logs displayed in messages since there are now sent to /var/log/cisco.
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Feb 3, 2011
I'm running a set of virtual machines (most in ESXi, one in VirtualBox on my desktop) to try and replicate an existing physical network structure with a Samba domain operating across multiple subnets. The layout is:
(ESXi)
* Router - Ubuntu 8.04, running dnsmasq, bridging my 2 virtual subnets (10.10.4.1/24 & 10.10.5.1/24) and my physical network
* PDC - Ubuntu 8.04, configured as a Samba PDC with PAM configured to use LDAP, SMBLDAP etc. on 10.10.4.11
* LDAP - Ubuntu 8.04, running Zimbra 5 mail server, acting as the LDAP backend for Samba on 10.10.4.12
* BDC - Ubuntu 8.04, configured as a Samba BDC with PAM LDAP etc.
* Client1 - Windows XP, joined to domain on 10.10.5.100
(Virtualbox)
* Client2 - Windows XP, joined to domain on 10.10.5.99
Watching /var/log/daemon.log, /var/log/samba/*, smbstatus -bd0 shows that Client1 successfully logs on to the BDC (10.10.5.2) but Client2 logs on to the PDC (10.10.4.11) instead. Both clients have the same subnet, DNS, WINS settings etc. I've seen the issue happen in our physical setup too but very infrequently and usually when there's been a network interruption between the BDC(s) and the LDAP server.
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Sep 1, 2011
I am using my ubuntu server as my home router.Everything is working as expected with one exception.y DSL modem is a POS and every now and again it looses connection to the router. Sometimes it needs to be reset and sometimes it does not.Either way, when this happens my ubuntu server needs to reacquire an IP from my ISP. If it screws up when I'm at home it's no big deal, but if it happens when I'm not around my housemates have taken to hitting the reset switch on the server. I'm not a big fan of this so I wrote a script to ping my ISP's gateway. If it's unavailable it bounces the eth0 interface and tries to get an IP. I am running this script every couple of minutes in a cron job. Now I'm getting syslog entries like
Code:
Aug 9 20:31:01 portal CRON[9602]: (root) CMD (/opt/ChkAndFixNetwork.sh)
every few minutes. This is annoying and makes the logs useless for troubleshooting. I
[code]...
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Sep 1, 2011
We had recently got some problem with our server(local server) and we recently upgraded from Ubuntu server 8.04 to 10.04 and we were not able to access awstats logs from web.So can any one say a method to get back the logs from the server?
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May 4, 2010
I have configured my Cisco firewall to redirect all its logs to my Ubuntu 9.1 server (no UI.)
Now, my /var/log/messages is getting all the firewall logs + all other logs.
I'm wondering if there is a way to redirect the logs from my Cisco Firewall (coming from UDP port 514) to another file.
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Feb 4, 2010
I was just checking some of the generated logs from Samba.
Code:
Quote:
I've looked over my smb.conf and it doesn't look like I even have any printer sharing enabled.
Quote:
How PC1 was refused a connection when it looks like I don't have any printers being shared throught Samba?
This is just on a home LAN.
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Apr 5, 2011
I try to log all my iptable logs to mysql instead just a logfile. The setup is as followed:
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[red]Problem[/red] rsyslog logs everything correct, except it does not log to db, it logs to /var/log/messages. As I am brand new to the whole Linux experience, I don't get it. My /etc/rsyslog.conf is setup with $ModLoad onmysql.
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Jun 15, 2011
I've suddenly stopped getting emails from logwatch which runs on an Ubuntu server daily using cron.After a good day or so of troubleshooting, I was able to establish that it was the 'Service = named' line in my logwatch.conf file, which was stopping the emails from coming through. If I commented out this line, the logwatch emails come through with no issues, uncomment, and I don't get an email. I don't get any error from logwatch itself when I run it, even with '--debug high', leading me to think that my email configuration is setup ok, at least. Furthermore, I tried running logwatch with '--output file --format html' and logwatch produces a valid html file.
I then thought: "Could I have a entry in my Bind/named log files which could be rejected by my ISP's smtp server?". So, (to the best of my knowledge) I cleared out the log files in /var/log that contained messages from named. I then ran logwatch (including the named service in my logwatch.conf file) and I got an email through, with a pretty much empty named section, which is exactly what I anticipated. Great! - it's fixed.
So, the cron.daily ran early this morning, but still no email in my inbox when I got up. I then tried to run 'logwatch --Range today' and lo and behold, I got a logwatch report email, which included a named section, with log entries in there. So it seems that something that's been logged by named overnight to my logfiles (i.e. '--Range yesterday') has caused issues again with logwatch's ability to send reports through my ISP's smtp servers.
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Jul 6, 2011
I am new to web server support. I have a request from my management to modify the logging slightly. Effectively I need to redirect a custom string from our http response into the apache access logs. When a user navigates to our site they receive a "dye" number that is associated with them. This number follows them to whatever cluster they are directed too. The string is formatted as such, com-company-dye: d0a2#6dfce. I need that that header dye to appear in the access logs so we can use that dye number as a key for troubleshooting issues though out our various monitoring systems.
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Sep 1, 2011
The attached log file includes two crashes/reboots within the past day or so I have recently started trying to set up / manage a Linux (Ubuntu 10.04.2 LTS) server in our data center (all other servers are Windows boxes). The server periodically hangs and becomes unresponsive and I'm at a loss to find anything in any log that indicates a specific cause. Sometimes it's up for hours, sometimes days (14 days at longest). Plugging a monitor in to the machine after a hang shows nothing at all. In an effort to troubleshoot the problem we've tried disabling APIC, more out of "educated desperation" than anything else. Unfortunately we are limited in some of the troubleshooting we can do, as we have a single client website hosted on the box (the reason we set it up) so anything that involves significant downtime is a problem.
As this is our first attempt at setting up a linux box, we are using a "well equipped" desktop grade machine but not what I would call "server grade" hardware. This is a standalone box, not a VPS. We are using a hardware, not software, RAID array and have plenty of memory in the box.
Caveats / Background:
I am relatively new to Linux in general. I spend much more time writing code than managing servers. I'm comfortable with working on the box, but I'm not really a sysadmin guy. I'm comfortable with the command line but have more experience with OS X (BSD). I am unsure of all of the tools / information / Logs that may be available, though I try to be thorough in checking what I do know. I did not physically configure the hardware so I'm not sure of all of the specs but I can get any info I need to troubleshoot. I may be skipping very basic steps or missing obvious places to look for information without knowing it.
A little more detail:
Real memory: 8GB
Ubuntu 10.04.2 LTS
Hardware RAID 10
Managing sites with Webmin version 1.550
Server is in a remote data center. Hands on-troubleshooting is difficult. We have attempted two Linux setups at this point. The first was on a hardware config identical to this one, but with no actual pieces of hardware reused. That attempt was using CentOS and we were attempting to set up CPanel. We scrapped that install because of this same problem (periodic crashing / hanging). The second attempt (this one) is showing the same behavior. The only thing I can really see in common are the hardware configuration (though CentOS & Ubuntu may have more in common than I think).
The box will run fine for hours, days, or even weeks, and then just stop responding entirely. I check all of the logs I know to check (primarily messages, syslog and kern.log) but I don't see anything that seems like an error to me. I do see lines that I don't understand that may or may not be problems, such as:
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rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="814" x-info="http://www.rsyslog.com"] rsyslogd was HUPed, type 'lightweight'.
Most of our syslog entries seem to be logs of webmin related cron jobs running. My gut tells me that there is possibly some component in our configuration Linux does not like or needs a driver update (maybe the raid card for example), but I'm unsure of how to do more to track down or determine what that might be. Guess and check is expensive. Another thought I've had is that one or more of the cron jobs that are running are tripping something up, but it doesn't appear to be reproducible on demand and, again, I'm at a loss on how to test that theory any further. The same cron job does not appear to be running each time the server goes down. This is a portion the log just prior to our last hang:
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Aug 8 11:00:01 linhost01 CRON[10771]: (www-data) CMD ([ -x /usr/lib/cgi-bin/awstats.pl -a -f /etc/awstats/awstats.conf -a -r /var/log/apache2/access.log ] && /usr/lib/cgi-bin/awstats.pl -config=awstats -update >/dev/null)
[code].....
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Jan 31, 2011
I've recently installed Fedora 14 (x86_64) on my Alienware m15x laptop which has a NVIDIA GTX 260m onboard. Now I have followed leigh123linux's guide to installing those drivers on F14. The installation is a success and everything seems to be in working order, until the system randomly logs the user out and/or restarts the session with no warning. The screen goes black and the nvidia logo appears and then its back to the login screen again. This can happen many times with no apparent stop insight. This does not happen with the default F14 drivers that come with the installation, I have tried several re installations of the Fedora OS and several re installations of the NVIDIA driver, i still have the same problems.
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Jan 17, 2010
Currently Im having a syslog server that consolidate firewall logs on port 514 udp. Im also having a IDS device that I wish to push its logs to this particular syslog server so that I can retrieve my IDS logs on this server as well.
Is it possible to do so?Having syslog listening on port 514 for both firewall and IDS logs? If it is possible will the logs be recorded in a single log file?Or will it be recorded in a separate log file ie. firewall.log, IDS.log etc?? I wish to have them in separate individual log files or else there will be hard time segregating the log entries in a single file. Can anyone advice on how to achieve this??
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Jan 15, 2010
I've done a fresh install of Karmic 9.10. I'm running on an ASUS laptop (Core 2 Duo, 2GB RAM, NVIDIA GeForce 7300). Problem: When shutting down via the In Indicator applet (i.e. top right menu where one of the options is "Shut Down..."), the system seems to log out the user instead. Then at the user login screen, I have to select "shut down" from there before the laptop powers off. I've also discovered that from the GNOME desktop if I open a terminal and do "sudo shutdown -h now", the system powers off as expected without any further action. Seems like a permissions problem even though the account is the administrator and is the account used for sudo actions.
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Sep 3, 2010
I am trying to grep a particular string from the files of 2 different servers without copying and calculate the total count of its occurence on both files. File structure is same on both servers and for reference as follows:
Code:
27-Aug-2010 10:04:30,601|919122874903|phtunes_app|1282243292627|NotifySmsReception|DMGenerateLogInterceptor - ExternalTransactionID:SDP-DM-26713018, TransactionStatus:Requested
27-Aug-2010
[code]....
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Oct 29, 2010
Im trying to limit the diskspace users on the system may consume, and i found quotas (im a total linux noob). But when i try to set it, no matter what i set it to the maximus is 2 GB. Now... i need quite a lot more than that. One user should be able to use 1900 GB and the other 600 GB. How can i fix this? Im using ubuntu server 10.04.
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Jan 19, 2011
Im trying to make it so one user "bird" logs into to a specific directory like /foo
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Apr 19, 2010
When I try to login as me - it gets pretty far but then something happens and automatically logs out. This happens in Gnome, Kde too. Now - I have no problem logging in a Root. Is there a way I can try to stop the login process before it kicks me out, or is there a way to look at some files to tell me what's going on?
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Jun 30, 2010
I am currently in a project to set up an LTSP server with 10 thin clients. I am using Ubuntu 9.10 (Karmic).
Installing server and booting clients are working fine. Now, according to the need, I have to restrict user session numbers and allow resuming previous user session.
I have achieved to do the first one, but still could not able to setup the second one. As per requirement, if some thin can have power failure, the same session should be restored back. I am confused here, if I need to focus on saving xsessions or saving gnome sessions. I am looking for a concrete solution as I am running out of time.
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Jan 29, 2010
On our app server the logs from the Sybase Mobilink service get logged to /var/log because of that I did a chmod a+rx /var/log and all is well until.... the next day QA logs in goes to check the logs and gets:
Quote:
qa@dwdb [~]$ ls /var/log
ls: /var/log: Permission denied
qa@dwdb [~]$
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Jul 8, 2010
I have googled around a bit but i keep getting different results. I want to add a new user to my FTP server. Im not entirely sure what ftp server im using. When i set up my server i used this site: http://net.tutsplus.com/tutorials/ph...rver-for-free/ . It seems when i set up the server originally my admin username seems to be added to the ftp server as well. Now i want to have a new user on my server. That user can ssh into the server but when they use filezilla to ftp they can only download in it and not upload. So im assuming that they need permissions somewhere which im assuming is somehow adding them to the ftp server. I am brand new to Ubuntu and Ubuntu server.
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