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• How to fix a Postfix/MySQL/Dovecot Unknown Host Issue?

  - by thiesdiggity

  I am having an issue with one of my Postfix/Dovecot mail servers and I'm unsure how to fix the problem. I will try to explain it in detail, here it goes: I have an Ubuntu server setup using Virtual hosting with Postfix, Dovecot and MySQL. We have one domain setup as a virtual domain, for this example I am going to use mail.example.com. Under that domain we have one email address. I have another server (MS Exchange) setup using another one of my sub-domains, ex.example.com. The problem is that when I SMTP into the account on mail.example.com and try to send an email to an account on ex.example.com, I get the email returned back to us with an "unknown host" error. Now, I know that the mail.example.com server can resolve the ex.example.com domain because I can ping/dig while SSH'd into it. I can also log into Postfix via Telnet and send an email to an ex.example.com mailbox. I'm guessing that it has something to do with Postfix/Dovecot looking locally for the domain in the virtual domain list because of the tld domain (example.com)? If that's the case, how do I get Postfix/Dovecot to only look locally for the entire URL (mail.example.com) and if it doesn't find it, send it to the correct server by looking up the MX/A records (which I know exist and are setup correctly)? I have been working on this all day and any guidance would be GREATLY appreciated! Thanks for your time!

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• Whitelist IP from google-authenticator in sshd pam

  - by spudwaffle

  My Ubuntu 12.04 server uses the google-authenticator pam module to provide two step authentication for ssh. I need to make it so that a certain IP does not need to type the verification code. The /etc/pam.d/sshd file is below: # PAM configuration for the Secure Shell service # Read environment variables from /etc/environment and # /etc/security/pam_env.conf. auth required pam_env.so # [1] # In Debian 4.0 (etch), locale-related environment variables were moved to # /etc/default/locale, so read that as well. auth required pam_env.so envfile=/etc/default/locale # Standard Un*x authentication. @include common-auth # Disallow non-root logins when /etc/nologin exists. account required pam_nologin.so # Uncomment and edit /etc/security/access.conf if you need to set complex # access limits that are hard to express in sshd_config. # account required pam_access.so # Standard Un*x authorization. @include common-account # Standard Un*x session setup and teardown. @include common-session # Print the message of the day upon successful login. session optional pam_motd.so # [1] # Print the status of the user's mailbox upon successful login. session optional pam_mail.so standard noenv # [1] # Set up user limits from /etc/security/limits.conf. session required pam_limits.so # Set up SELinux capabilities (need modified pam) # session required pam_selinux.so multiple # Standard Un*x password updating. @include common-password auth required pam_google_authenticator.so I've already tried adding a auth sufficient pam_exec.so /etc/pam.d/ip.sh line above the google-authenticator line, but I can't understand how to check an IP adress in the bash script.

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• Deploying a Git server in a AWS linux instance

  - by Leroux

  I'm making a git server on my linux instance in AWS. I tried doing it using these instructions but in the end I always get stuck with a "Permission denied (publickey)" message. So here is my detailed steps, the client is my windows machine running mysysgit and the server is the AWS ubuntu instance : 1) I created user Git with a simple password. 2) Created the ssh directory in ~/.ssh 3) On the client I created ssh keys using ssh-keygen -t rsa -b 1024, they got dropped in my /Users/[Name]/.ssh directory, id_rsa and id_rsa.pub key pair was created. 4) Using notepad I copy pasted the text into newly created files on the server in the ~/.ssh directory of my Git user. ~/.ssh/id_rsa and **~/.ssh/id_rsa.pub** were copied. 5) On the server I made the authorized_hosts file using "cat id_rsa.pub authorized_hosts" (while inside the .ssh directory) 6) Now to test it, on my client machine I did ssh -v git@[ip.address] 7) Result : debug1: Host 'ip.address' is known and matches the RSA host key. debug1: Found key in /c/Users/[Name]/.ssh/known_hosts:1 debug1: ssh_rsa_verify: signature correct debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Trying private key: /c/Users/[Name]/.ssh/identity debug1: Trying private key: /c/Users/[Name]/.ssh/id_rsa debug1: Offering public key: /c/Users/[Name]/.ssh/id_dsa debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey). I would appreciate any insight anyone can give me.

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• Acer Aspire One getting extremely hot

  - by ascom

  I have an Acer Aspire One D250-1197. I really better type fast before it overheats again... For some reason, I'm having a problem with heat on my netbook only when I run Joli OS (Ubuntu 9.10 LTS?). When I leave it idle, with nothing running (other than the regular Joli OS desktop and a couple of doing-nothing terminals), heat slowly builds up to the point where the netbook is burning hot to the touch. I have never had this problem when running Windows 7 Starter (even though it gives me plenty of other headaches). It seems that the fan is spinning, but not fast enough to keep up with the heat buildup. Is there something wrong with the fan drivers? The computer doesn't seem to recognize that it is overheating. What can I do to solve this problem (other than shut it off or use Windows)? I'm currently on the wrong side of Earth (I mean, on vacation), so I just need a temporary fix, such as a driver I can install. Also, I have to use Linux, because I have to share out the wired connection in hotels wirelessly to the iPhones. EDIT: I'm switching from Joli OS to a more "proper" and up to date distribution (Xubuntu 13.04). I'll see if it still has the heat problem and try @nod's cpufreq idea.

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• How to add another application to apache?

  - by Jader Dias

  I was following the Zabbix installation tutorial for Ubuntu and it requested that I added a file /etc/apache2/sites-enabled/000-default containing Alias /zabbix /home/zabbix/public_html/ <Directory /home/zabbix/public_html> AllowOverride FileInfo AuthConfig Limit Indexes Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec <Limit GET POST OPTIONS PROPFIND> Order allow,deny Allow from all </Limit> <LimitExcept GET POST OPTIONS PROPFIND> Order deny,allow Deny from all </LimitExcept> </Directory> But I already have /etc/apache2/sites-enabled/railsapp NameVirtualHost *:80 NameVirtualHost *:443 <VirtualHost *:80> UseCanonicalName Off Include /etc/apache2/conf/railsapp.conf </VirtualHost> <VirtualHost *:443> SSLEngine on SSLCertificateFile /etc/ssl/certs/cert.pem Include /etc/apache2/conf/railsapp.conf RequestHeader set X_FORWARDED_PROTO 'https' </VirtualHost> and /etc/apache2/sites-enabled/mercurial NameVirtualHost *:8080 <VirtualHost *:8080> UseCanonicalName Off ServerAdmin webmaster@localhost AddHandler cgi-script .cgi ScriptAliasMatch ^(.*) /usr/lib/cgi-bin/hgwebdir.cgi/$1 </VirtualHost> I think that it is because of the already existing virtual hosts that my I can't access the zabbix page. How to circumvent this?

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• Error applying iptables rules using iptables-restore

  - by John Franic

  Hi I'm using Ubuntu 9.04 on a VPS. I'm getting an error if I apply a iptables rule. Here is what I have done. 1.Saved the existing rules iptables-save /etc/iptables.up.rules Created iptables.test.rules and add some rules to it nano /etc/iptables.test.rulesnano /etc/iptables.test.rules This is the rules I added *filter # Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0 -A INPUT -i lo -j ACCEPT -A INPUT -i ! lo -d 127.0.0.0/8 -j REJECT # Accepts all established inbound connections -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT # Allows all outbound traffic # You can modify this to only allow certain traffic -A OUTPUT -j ACCEPT # Allows HTTP and HTTPS connections from anywhere (the normal ports for websites) -A INPUT -p tcp --dport 80 -j ACCEPT -A INPUT -p tcp --dport 443 -j ACCEPT # Allows SSH connections # # THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE # -A INPUT -p tcp -m state --state NEW --dport 22- j ACCEPT # Allow ping -A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT # log iptables denied calls -A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7 # Reject all other inbound - default deny unless explicitly allowed policy -A INPUT -j REJECT -A FORWARD -j REJECT COMMIT After editing when I try to apply the rules by iptables-restore < /etc/iptables.test.rules I get the following error iptables-restore: line 42 failed Line 42 is COMMIT and I comment that out I get iptables-restore: COMMIT expected at line 43 I'm not sure what is the problem, it is expecting COMMIT but if COMMIT is there it's giving error. Could it be due to the fact i'm usin a VPS?My provider using OpenVZ for virtualizaton.

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• Server appears to have lost ability to read PHP files with LAMP

  - by OtagoHarbour

  I have LAMP installed on a PC that is running Ubuntu 11.10. LAMP was running fine but I had to restart the PC because Unity was messing up (as it often does) and the tool bar had disappeared. When it started up, I was unable to fire up any php files. I have a file index.php in /var/www. It is owned by www-data as is the directory that it is in. The LAN address of the server is 192.168.1.10. However when I type 192.168.1.10 into the URL box on Mozilla FireFox, I get Unable to connect Firefox can't establish a connection to the server at 192.168.1.10 This server is connected to another server on the LAN that has the LAN address 192.168.1.4. When I type 192.168.1.4 into the Firefow URL box on 192.168.1.10, I see the display associated with index.php on 192.168.1.4. Why can it not display its own /var/www/index.php? Any assistance with this would be greatly appreciated, Peter.

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• How to setup equivalent USVIDEO.ORG DNS-Proxy on Linux

  - by Gary

  I have a VPS in the USA running Ubuntu. I want to setup something similar to http://www.usvideo.org Basically, USVIDEO is a DNS service that allows Canadians to access American content like Hulu, Netflix, NBC, and etc (restricted by geographical IP). Here is how I think USVideo does it: Clients (PS3, XBOX, PC) specifies the DNS server(s) as specified on USVIDEO.org's website. If the DNS request is a video/audio site such as Netflix or Pandora, forward the request to a proxy. Otherwise, for all other requests, forward it to a different DNS server. If the specific video/audio URL is requested, return the address of the proxy server, which in turn relays traffic to the destination video/audio domain via the U.S. gateway so that it appears that the access is coming from a U.S. IP address. Once the DNS request has passed the U.S. IP address check, their proxy server steps out of the loop and lets the video streaming site contact you directly to start the video stream. This trick relies on the way that the video streaming sites check the country of your IP address once up front, but don't actually check the country of the destination IP address while the video is streaming. What is elegant about this solution is that a VPN Tunnel is not required to bypass geographical IP checks from certain websites. All that is required on the client side is to specify the DNS server (the VPS). If a certain site is geographically locked, just forward the traffic to a proxy, and that's it. These sites can be specified in the DNS entries, or perhaps in the proxy service to redirect the DNS request to its own proxy. I believe what I need to setup something similar is Squid Proxy, IPTables, and DNS. What I need help is how to exactly approach this? Would Squid Proxy be setup as a transparent proxy?

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• HTML Redirect issue with Apache2

  - by Vijit Jain

  I am facing an issue with the ProxyPass on my Apache server on Ubuntu. I have configured Apache to deal with Virtual Hosts on my server. There is an application with runs on the server and uses ports 8001 8002. I need to do something like www.example.com/demo/origin to display the contents that I would see when I visit www.example.com:8000. The contents to be displayed are a host of HTML pages. This is the section of the virtual host config that has issues ProxyPass /demo/vader http://www.example.com:8001/ ProxyPassReverse /demo/vader http://www.example:8001/ ProxyPass /demo/skywalker http://www.example.com:8002/ ProxyPassReverse /demo/skywalker http://www.example.com:8002/ Now when I visit example.com/demo/skywalker, I see the first page of port 8002, say the login.html page. The second should have been www.example.com/demo/skywalker/userAction.html, instead the server shows www.example.com:8000/login.html. In the error logs I see something like: [Mon Nov 11 18:01:20 2013] [debug] mod_proxy_http.c(1850): proxy: HTTP: FILE NOT FOUND /htdocs/js/demo.72fbff3c9a97f15a4fff28e19b0de909.min.js I do not have any folder htdocs in the system. This is only an issue while viewing .html pages. Otherwise, no such issue occurs. When I visit localhost:8001 it will show any and all contents without any errors or issues. www.example.com/demo/skywalker displays a separate webpage www.example.com/demo/origin displays a different webpage and www.example.com/demo/vader displays a different webpage. I have also tried to use one more type of combination, <Location /demo/origin/> ProxyPass http://localhost:8000/ ProxyPassReverse http://localhost:8000/ ProxyHTMLURLMap http://localhost:8000/ / </Location> This fails as well. I would greatly appreciate if anyone can help me resolve this issue.

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• Network is going down once per day

  - by Charly

  Once per day the network on eth0 is going down and we need to do sudo ifdown eth0; sudo ifup eth0 to get the network up. Here is the syslog: Feb 11 12:48:01 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 12:52:35 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 12:56:23 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:00:28 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:04:29 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:09:16 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:13:53 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:18:16 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:22:25 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:26:52 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:30:44 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:31:49 www-tech-1 dhclient: There is already a pid file /var/run/dhclient.eth0.pid with pid 3198 Feb 11 13:31:49 www-tech-1 dhclient: Listening on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:49 www-tech-1 dhclient: Sending on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:49 www-tech-1 dhclient: DHCPRELEASE on eth0 to 131.121.113.228 port 67 Feb 11 13:31:49 www-tech-1 dhclient: There is already a pid file /var/run/dhclient.eth0.pid with pid 134519072 Feb 11 13:31:50 www-tech-1 dhclient: Listening on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:50 www-tech-1 dhclient: Sending on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:52 www-tech-1 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 Feb 11 13:31:52 www-tech-1 dhclient: DHCPREQUEST of 131.121.14.17 on eth0 to 255.255.255.255 port 67 Feb 11 13:31:53 www-tech-1 kernel: [265383.991682] eth0: no IPv6 routers present Please check the last portion of this syslog. Can anybody help me?

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• Unknown Apache2 + PHP5 FastCGI 500 error .. caused by search engine bots?

  - by rdjurovich

  My Ubuntu server is configured with Apache 2.2.8 and PHP 5.2.4-2ubuntu5.18 in FastCGI mode. Everything works well, except I am seeing 500 errors that only seem to come from bots accessing the server.. for example (access.log): x.125.71.104 - - [16/Nov/2011:10:27:39 +1100] "GET / HTTP/1.1" 500 41377 "-" "Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)" x.40.103.239 - - [16/Nov/2011:11:05:56 +1100] "GET / HTTP/1.0" 500 14717 "-" "Mozilla/5.0 (compatible; mon.itor.us - free monitoring service; http://mon.itor.us)" x.249.67.114 - - [14/Nov/2011:20:57:17 +1100] "GET / HTTP/1.1" 500 101 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" x.55.39.85 - - [14/Nov/2011:19:31:06 +1100] "GET / HTTP/1.1" 500 7032 "-" "msnbot/2.0b (+http://search.msn.com/msnbot.htm)._" It is my understanding that a 500 error will be thrown when the PHP process fails to respond to Apache, which could be caused by a fatal PHP error or if PHP runs out of processes.. so my assumption is that either the bots are hitting the server too hard, killing the PHP processes, or something in the request header from bots is causing a fatal error in my PHP script? If anyone can offer advice on this it would be greatly appreciated! Ryan

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• Sendmail configs and logs look correct, but I get no mail

  - by Christian Dechery

  I used this tutorial to config sendmail on Ubuntu. Followed every step and when I test it, it seems to have worked, but I get no mail (not even on the spam folder) Below is the log for a test message: 050 >>> MAIL From:<[email protected]> SIZE=345 AUTH=<> 050 250 2.1.0 OK ek1sm23505399vdc.28 - gsmtp 050 >>> RCPT To:<######@gmail.com> 050 250 2.1.5 OK ek1sm23505399vdc.28 - gsmtp 050 >>> DATA 050 354 Go ahead ek1sm23505399vdc.28 - gsmtp 050 >>> . 050 250 2.0.0 OK 1401150762 ek1sm23505399vdc.28 - gsmtp 050 <########@gmail.com>... Sent (OK 1401150762 ek1sm23505399vdc.28 - gsmtp) 250 2.0.0 s4R0WdYN007263 Message accepted for delivery ######@gmail.com... Sent (s4R0WdYN007263 Message accepted for delivery) And this is my /var/log/mail.log May 26 21:32:39 UX-BLUEROOM sendmail[7262]: s4R0Wdxq007262: from=christian, size=105, class=0, nrcpts=1, msgid=<[email protected]>, relay=christian@localhost May 26 21:32:40 UX-BLUEROOM sm-mta[7263]: s4R0WdYN007263: from=<[email protected]>, size=345, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA-v4, relay=localhost [127.0.0.1] May 26 21:32:41 UX-BLUEROOM sm-mta[7263]: STARTTLS=client, relay=gmail-smtp-msa.l.google.com., version=TLSv1/SSLv3, verify=FAIL, cipher=ECDHE-RSA-RC4-SHA, bits=128/128 May 26 21:32:42 UX-BLUEROOM sm-mta[7263]: s4R0WdYN007263: to=<######@gmail.com>, ctladdr=<[email protected]> (1000/1000), delay=00:00:02, xdelay=00:00:02, mailer=relay, pri=30345, relay=gmail-smtp-msa.l.google.com. [173.194.75.109], dsn=2.0.0, stat=Sent (OK 1401150762 ek1sm23505399vdc.28 - gsmtp) May 26 21:32:42 UX-BLUEROOM sendmail[7262]: s4R0Wdxq007262: to=#####@gmail.com, ctladdr=christian (1000/1000), delay=00:00:03, xdelay=00:00:03, mailer=relay, pri=30105, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (s4R0WdYN007263 Message accepted for delivery)

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• Process killing trouble

  - by Aditya Singh

  I am trying to program a server software which involves a lot of testing on java / scala platform. Whenever i compile and execute the code. It starts listening on port 80. Sometimes i need to terminate it by Ctrl+C when it hangs. In that case, ubuntu is not freeing the port. So in order to run the process, i have to restart the machine. I see this at ps aux root 1924 0.0 0.0 5796 1660 pts/0 T 05:44 0:00 sudo scala - root 1925 0.2 1.5 491448 40796 pts/0 Tl 05:44 0:03 java -Xmx256M -Xms16M So process 1924 and 1925. I did sudo kill on both these. But then they keep on persisting even after a long time. sudo nmap -T Aggressive -A -v 127.0.0.1 -p 1-65000 Scanning localhost (127.0.0.1) [65000 ports] Discovered open port 80/tcp on 127.0.0.1 It means its still there ! sudo netstat --tcp --udp --listening --program tcp6 0 0 [::]:www [::]:* LISTEN 1925/java tcp6 0 0 ip6-localhost:ipp [::]:* LISTEN 1185/cupsd This means its 1925 - java How to kill it.

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• SSH to VM rejecting password, works from virt-manager console

  - by boundless08

  First of all, I'm sorry if there is a duplicate post somewhere. I searched for a while but none of the posts I found fixed my problem. It's fairly annoying. I created a new VM on our network and when using virt-manager I can log into the VM fine with the username and password. When I try to ssh to the VM from anywhere else it rejects the password, but I know the password is correct. I've even changed it multiple times to make sure its correct. The address I'm ssh'ing to is definitely pointing at the right VM as well, I've tested all this. It's still usable, but the virt-manager console is very limited so the sooner I can get to the bottom of this the better. VM is running ubuntu 12.04 btw. EDIT 1 Checked the auth.log and all I'm getting is "sshd[29304]:Connection closed by 'server.ip.address' [preauth]". I also tried allowing logging in as root, and even turned off password auth altogether in sshd_config and still nothing! I then turned on "AllowEmptyPasswords", still a whole lot of nothing.

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• Creating mdraid device on top of other existing mdraid devices

  - by Dmitriusan

  I'm considering creating something like "hierarchical raid" and wondering whether it is possible using pure mdraid. Moreover, I'm going to boot from this device. I'm using Ubuntu Server 12.04 LTS with Grub2 bootloader. Motivation behind doing that is: I have 4 x 1tb 7200rpm disks. Two are newer and faster (up to 200mb/sec) and other two are slower (up to 140mb/sec). I want to create RAID-0 device from them. When creating such RAID-0 directly from 4 hard disks, I get summary speed up to ~480mb/sec. That is roughly 4*120mb/sec, so RAID-0 works with speed of the slowest device. I have an idea to create a separate RAID-0 md0 device from 500gb partitions of slower hard disks. Theoretically, this md0 device will have speed 2*140=240~280mb/sec. After that, I'm going to add this md0 device to RAID-0 with faster disks, finishing with up to 3*200=600mb/sec. Stripe-width for this raid will be 2x times bigger than for underlying raid with slow disks. Questions are: is it possible or I'm missing something? will that work as expected? can I boot from such consolidated raid device? any better ideas? any pitfalls? I don't want to use fakeraid for consolidating slow disks for multiple reasons (portability, ability to customize parameters and so on). PS Speed is needed for home virtualization server and just for experience/fun. Reliability is provided via regular automatic backups to a separate device. PPS I considered also using different stripe-width for hard disks with different speed in single raid, but mdraid does not seem to support that.

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• Can't find disk usage in one directory

  - by Xster

  Similar questions are asked frequently but no suggested answers solved my issue. I have some disk space usage that I can't find as well. In df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 144183992 136857180 2652 100% / udev 2013316 4 2013312 1% /dev tmpfs 808848 876 807972 1% /run none 5120 0 5120 0% /run/lock none 2022116 76 2022040 1% /run/shm overflow 1024 0 1024 0% /tmp I checked the inodes, I checked lsof for +L1 or deleted files, I rebooted, I checked for files hidden behind mounts but none of them were the issue. It grows periodically and I'm running out of things to delete to feed the beast. It's all in the home directory of the only user I have. In du in ~ du -h --max-depth=1 192K ./.nv 2.1M ./.gconf 12K ./Pictures 1.6M ./.launchpadlib 12K ./Public 24K ./.TemporaryItems 8.9M ./.cache 12K ./Network Trash Folder 28K ./.vnc 11M ./.AppleDB 48K ./.subversion 1.9G ./.xbmc 8.0K ./.AppleDesktop 12K ./.dbus 81M ./.mozilla 12K ./Music 160K ./.gnome2 44K ./Downloads 692K ./.zsh 236K ./.AppleDouble 64K ./.pulse 4.0K ./.gvfs 1.4M ./.adobe 44K ./.pki 44K ./.compiz-1 168K ./.config 1.4M ./.thumbnails 12K ./Templates 912K ./.gstreamer-0.10 8.0K ./.emacs.d 92K ./Desktop 1.3M ./.local 12K ./Ubuntu One 12K ./Documents 296K ./.fontconfig 12K ./.qt 12K ./.gnome2_private 20K ./.ssh 20K ./.mission-control 12K ./Videos 12K ./Temporary Items 640K ./.macromedia 124G . I can't find a way to figure out how it got to that 124G in that directory. There are no mount points in home.

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• unzip file on small drive

  - by David Oneill

  I have a zip file that contains many files. Each file in the zip file is about 100MB, and is compressed about 10% (IE it is about 90MB in the zip file). The whole zip file is 20GB, and I'm trying to unzip it onto a drive that has only 30GB free. On Windows 7, how can I unzip a zip file on my laptop's harddrive that doesn't have enough space for both the zipped and unzipped copies of the file? IE can I tell windows to remove stuff from the zip file as it is uncompressed?

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• MySQL permission errors

  - by dotancohen

  It seems that on a Ubuntu 14.04 machine the user mysql cannot access anything. It is not writing logs nor reading files. Witness: - bruno():mysql$ cat /etc/passwd | grep mysql mysql:x:116:127:MySQL Server,,,:/nonexistent:/bin/false - bruno():mysql$ sudo mysql_install_db Installing MySQL system tables... 140818 18:16:50 [ERROR] Can't read from messagefile '/usr/share/mysql/english/errmsg.sys' 140818 18:16:50 [ERROR] Aborting 140818 18:16:50 [Note] Installation of system tables failed! Examine the logs in /var/lib/mysql for more information. ...boilerplate trimmed... - bruno():mysql$ ls -la /usr/share/mysql/english/errmsg.sys -rw-r--r-- 1 root root 59535 Jul 29 13:40 /usr/share/mysql/english/errmsg.sys - bruno():mysql$ wc -l /usr/share/mysql/english/errmsg.sys 16 /usr/share/mysql/english/errmsg.sys Here we have seen that mysql cannot read /usr/share/mysql/english/errmsg.sys even though the permissions are open to read it, and in fact the regular login user can read the file (with wc). Additionally, MySQL is not writing any logs: - bruno():mysql$ ls -la /var/log/mysql total 8 drwxr-s--- 2 mysql adm 4096 Aug 18 16:10 . drwxrwxr-x 18 root syslog 4096 Aug 18 16:10 .. What might cause this user to not be able to access anything? What can I do about it?

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• Wireless disconnect randomly with wpa_supplicant reason=2

  - by renenglish

  I installed ubuntu-server 12.04 on my PC , and I use an usb wireless card to join the network. It works ok when I boot up my PC , but the wireless disconnects after a while. I pkill wpa_supplicant and reload the driver rtl8192cu , then it works a again. Then it disconnect again after about a random minutes. Here is the syslog: 22384 May 29 21:49:27 homecenter kernel: [ 6450.459313] wlan1: authenticated 22385 May 29 21:49:27 homecenter kernel: [ 6450.459535] wlan1: associate with f4:ec:38:45:62:74 (try 1) 22386 May 29 21:49:27 homecenter kernel: [ 6450.469080] wlan1: RX AssocResp from f4:ec:38:45:62:74 (capab=0 x431 status=0 aid=3) 22387 May 29 21:49:27 homecenter kernel: [ 6450.469085] wlan1: associated 22388 May 29 21:49:27 homecenter wpa_supplicant[2342]: Associated with f4:ec:38:45:62:74 22389 May 29 21:49:27 homecenter kernel: [ 6450.481933] ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 22390 May 29 21:49:27 homecenter wpa_supplicant[2342]: WPA: Key negotiation completed with f4:ec:38:45:62:7 4 [PTK=CCMP GTK=CCMP] 22391 May 29 21:49:27 homecenter wpa_supplicant[2342]: CTRL-EVENT-CONNECTED - Connection to f4:ec:38:45:62: 74 completed (auth) [id=0 id_str=] 22392 May 29 21:49:38 homecenter kernel: [ 6461.472014] wlan1: no IPv6 routers present 22393 May 29 21:49:38 homecenter ntpdate[2263]: step time server 91.189.94.4 offset 0.012758 sec 22394 May 29 21:49:51 homecenter ntpdate[2404]: step time server 91.189.94.4 offset -0.001190 sec 22395 May 29 21:54:38 homecenter kernel: [ 6762.052030] wlan1: deauthenticated from f4:ec:38:45:62:74 (Reas on: 2) 22396 May 29 21:54:38 homecenter wpa_supplicant[2342]: CTRL-EVENT-DISCONNECTED bssid=f4:ec:38:45:62:74 reas on=2 22397 May 29 21:54:38 homecenter kernel: [ 6762.064744] cfg80211: All devices are disconnected, going to re store regulatory settings 22398 May 29 21:54:38 homecenter kernel: [ 6762.064752] cfg80211: Restoring regulatory settings 22399 May 29 21:54:38 homecenter kernel: [ 6762.064757] cfg80211: Calling CRDA to update world regulatory d omain 22400 May 29 21:54:38 homecenter kernel: [ 6762.069938] cfg80211: Ignoring regulatory request Set by core s ince the driver uses its own custom regulatory domain 22401 May 29 21:54:38 homecenter kernel: [ 6762.069943] cfg80211: World regulatory domain updated: 22402 May 29 21:54:38 homecenter kernel: [ 6762.069945] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) 22403 May 29 21:54:38 homecenter kernel: [ 6762.069949] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KH z), (300 mBi, 2000 mBm) 22404 May 29 21:54:38 homecenter kernel: [ 6762.069952] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KH z), (300 mBi, 2000 mBm) 22405 May 29 21:54:38 homecenter kernel: [ 6762.069956] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KH z), (300 mBi, 2000 mBm) 22406 May 29 21:54:38 homecenter kernel: [ 6762.069959] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KH z), (300 mBi, 2000 mBm) 22407 May 29 21:54:38 homecenter kernel: [ 6762.069962] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KH z), (300 mBi, 2000 mBm)

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• Using dropbox / symbolic link combo successfully

  - by wim

  In the past I have kept some files on dropbox by copying them into my ~/Dropbox folder on Ubuntu. I don't want to move the original files into Dropbox synch folder or muck around with my directory structure. Then I have found I was using dropbox more and more, and wasting a lot of space this way by duplication of data. I use a small SSD locally for OS, any other data is kept on mounted shares from my NAS. I found I could successfully get files up to the cloud by using symbolic links like: ln -s /some/mounted/share/dir ~/Dropbox/dir And dropbox would carry on and sync those files remotely whilst only using up the space of the symbolic link locally. This worked well for me for a few weeks, until I turned on my laptop one day and saw '421 files have been removed from your dropbox' notification. They were still there in the original mounted share, but the symbolic links I'd made were completely gone for some reason. What did I do wrong? It is possible the share could have become unmounted, but I didn't expect this would cause all my files to be deleted from the cloud could it? How can I 'share' files on my dropbox in this way without the danger of the originals being modified from remotely?

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• Startup script for Red5 on Ubuntu 9.04

  - by user49249

  I am creating startup script for Red5 on Ubuntu. Red5 is installed in /opt/red5 Following is a working script on a CentOS Box on which Red5 is running [code] ==========Start init script ========== #!/bin/sh PROG=red5 RED5_HOME=/opt/red5/dist DAEMON=$RED5_HOME/$PROG.sh PIDFILE=/var/run/$PROG.pid # Source function library . /etc/rc.d/init.d/functions [ -r /etc/sysconfig/red5 ] && . /etc/sysconfig/red5 RETVAL=0 case "$1" in start) echo -n $"Starting $PROG: " cd $RED5_HOME $DAEMON >/dev/null 2>/dev/null & RETVAL=$? if [ $RETVAL -eq 0 ]; then echo $! > $PIDFILE touch /var/lock/subsys/$PROG fi [ $RETVAL -eq 0 ] && success $"$PROG startup" || failure $"$PROG startup" echo ;; stop) echo -n $"Shutting down $PROG: " killproc -p $PIDFILE RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$PROG ;; restart) $0 stop $0 start ;; status) status $PROG -p $PIDFILE RETVAL=$? ;; *) echo $"Usage: $0 {start|stop|restart|status}" RETVAL=1 esac exit $RETVAL [/code] What do I need to replace for Ubuntu in the above script. My Red5 is in /opt/red5/ and to start it manually I always do /opt/red5/dist/red5.sh from Ubuntu As I did not find rc.d/functions on Ubuntu on my laptop also /etc/init.d/functions I did not existed. I would like to be able to use them with service as Red hat distributions do. I checked /lib/lsb/init-functions.

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• Proxy to either Rails app or Node.js app depending on HTTP path w/ Nginx

  - by Cirrostratus

  On Ubuntu 11, I have Nginx correctly serving either CouchDB or Node.js depending on the path, but am unable to get Nginx to access a Rails app via it's port. server { rewrite ^/api(.*)$ $1 last; listen 80; server_name example.com; location / { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_pass http://127.0.0.1:3005/; } location /ruby { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_pass http://127.0.0.1:9051/; } location /_utils { proxy_pass http://127.0.0.1:5984; proxy_redirect off; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_buffering off; # buffering would break CouchDB's _changes feed } gzip on; gzip_comp_level 9; gzip_min_length 1400; gzip_types text/plain text/css image/png image/gif image/jpeg application/x-javascript text/xml application/xml application/x ml+rss text/javascript; gzip_vary on; gzip_http_version 1.1; gzip_disable "MSIE [1-6]\.(?!.*SV1)"; } / and /_utils are working bu /ruby gives me a 403 Forbidden

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• Cannot open Pivot Table source file

  - by Ken

  Excel Pivot table error is: Cannot open Pivot Table source file C:\Users\UserName\AppData\Roaming\Microsoft\Excel\DatabaseName (version1).TableName I’ve seen other questions and answers with the same topic, but I think this is different. I believe I know why the error is occurring: Excel closed unexpectantly and did autosave with (version1) attached to the original file name and saved it in the C:\User etc. above , which is the default recovery location. I opened the recovered file in Excel, saved it as version1 on the server where the original file was located, deleted the original file, and renamed the version1 to the original name. When I go to PivotTable Tools? Options? Change Data Source, it shows only the Table and Range, which are correct, but it does not show the file name or path. The version1 and the renamed file both had the same structure, so the same source table was in both, by they were different files. How do I change the source file from what it is looking for to my renamed file? PS- The (version1) file that it says it is looking for is not in the autosave location, i.e. it is not at the path where it says it is looking in. Thank you for any help Ken

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• No external src ip in log files (my router ip appears instead)

  - by bongo_fury

  I recently retired my workhorse WRT54G router/AP in favor of a Linksys EA2700. Since then, all inbound traffic (bound to an Ubuntu 10.02 box running LAMP)logged to Syslog, Apache's error and access logs, etc. (all behind said router) is getting logged with a src ip of 192.168.1.1, that of the router's internal ip. For example, here is an old entry from apache's access.log: 74.82.68.20 - - [22/Feb/2011:10:14:34 -0600] "GET /assets/css/style.css HTTP/1.1" 304 154 "http://example.com/view.php?event_id=1" "BlackBerry8520/5.0.0.822 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/100" And here is one since switching the router: 192.168.1.1 - - [05/Oct/2012:21:29:25 -0500] "GET /somedir/print.css HTTP/1.1" 200 650 "http://example.com/somedir/" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1"** That first field is the problem. Each and every entry in every log shows an "external" IP of 192.168.1.1, which isn't very helpful. Any ideas? Much thanks from a n00b!

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• .htaccess working on remote server but does not work on localhost. Getting 404 errors on localhost

  - by Afsheen Khosravian

  MY PROBLEM: When I visit localhost the site does not work. It shows some text from the site but it seems the server can not locate any other files. Here is a snippet of the errors from firebug: "NetworkError: 404 Not Found - localhost/css/popup.css" "NetworkError: 404 Not Found - localhost/css/style.css" "NetworkError: 404 Not Found - localhost/css/player.css" "NetworkError: 404 Not Found - localhost/css/ui-lightness/jquery-ui-1.8.11.custom.css" "NetworkError: 404 Not Found - localhost/js/jquery.js" It seems my server is looking for the files in the wrong places. For example, localhost/css/popup.css is actually located at localhost/app/webroot/css/popup.css. I have my site setup on a remote server with the same exact configurations and it works perfectly fine. I am just having this issue trying to run the site on my laptop at localhost. I edited my VirtualHosts file DocumentRoot and to /home/user/public_html/site.com/public/app/webroot/ and this reduces some errors but I feel that this is wrong and sort of hacking it since I didn't use these setting on my production server which works. The last note I want to make is that the website uses dynamic URLs. I dont know if that has anything to do with it. For example, on the production server the URLS are: site.com/#hello/12321. HERES WHAT I AM WORKING WITH: I have a LAMP server setup on my laptop which runs on Ubuntu 11.10. I have enabled mod_rewrite: sudo a2enmod rewrite Then I edited my Virtual Hosts file: <VirtualHost *:80> ServerName localhost DirectoryIndex index.php DocumentRoot /home/user/public_html/site.com/public <Directory /home/user/public_html/site.com/public/> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny allow from all </Directory> </VirtualHost> Then I restarted apache. My website is using cakePHP. This is the directory structure of the website: "/home/user/public_html/site.com/public" contains: index.php app cake plugins vendors These are my .htaccess files: /home/user/public_html/site.com/public/app/.htaccess: <IfModule mod_rewrite.c> RewriteEngine on RewriteRule ^$ webroot/ [L] RewriteRule (.*) webroot/$1 [L] </IfModule> /home/user/public_html/site.com/public/app/webroot/.htaccess: <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?url=$1 [QSA,L] </IfModule>

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