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  • Limit download usage for clients

    - by Kumar P
    i am maintaining few windows xp machines under rhel 5 . i want to set quota for download file size. How to do it ? I mean, in lan usar A's maximum donload file size is 300 MB , and user B's maximum download file size in 200 MB. I want to block downloading when user try to download more than 300 MB file.User should not allow to download 300MB file at a time. Or how to set quota for maximum download per day, is there possible to do it ? How can i do this ?

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  • What's wrong with my custom .desktop xsession?

    - by Noam Gagliardi
    I want to create a custom Xmonad session that loads an .xsession script in my home folder. This is the original file I copied. This one works: [Desktop Entry] Encoding=UTF-8 Name=XMonad Comment=Lightweight tiling window manager Exec=xmonad Icon=xmonad.png Type=XSession This is my modified file, xmonad-custom.desktop. When I logout, then login choosing this "xmonad-custom", the screen just flashes and sends me back to the ubuntu login screen (as if it briefly logs in and out of the session): [Desktop Entry] Encoding=UTF-8 Name=XMonad Custom Comment=Lightweight tiling window manager Exec=/home/{username}/.xsession Icon=xmonad.png Type=XSession X-Ubuntu-Gettext-Domain=gdm I also tried without the last line. This is my ~/.xsession file, in case there's an error with this script: #!/bin/env bash xrdb -merge .Xresources trayer --edge top --align right --SetDockType true --SetPartialStrut \ true --expand true --width 15 --height 12 --transparent true --tint 0x000000 & dropbox start & exec xmonad

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  • Xinetd , vncserver memory requirement

    - by JP19
    Hi, I am installing the following on a low memory system: vnc4server xinetd xterm openbox obconf I will only occasionally be logging into the vncs for some admin work. My question is: 1) Does xinetd take memory / cpu even when vncserver is not running? If so, can I "run" xinetd on demand (how)? And if no, any idea how much memory it will take when vncserver is not running? 2) Does vncserver take substantial memory when no clients are connected? 3) Do openbox/obconf take memory when vncserver is running but no client are connected? 4) Do openbox/obconf take memory when no vncserver is running? thanks JP

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  • Apache heavy load VIRT vs RES memory

    - by pako
    I have a Debian 5 server, which gets a lot of traffic. Right now the server has 4 GB of RAM and no swap memory. I see in top that Apache processes consume roughly 180 MB virtual memory (VIRT) each, and 16 MB of real RAM (RES). So how many Apache threads can I have running at the same time? About 4 GB / 180 MB = 22 or 4 GB / 16 MB = 256?

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  • Debian tuning for increasing read/write buffer.

    - by Claudiu
    Is there a way to modify Debian settings so the memory could be used more for disk read/write caching ? I am already using RAID 0 but thats not enough for multiple users, and the disk is almost struggled. Torrents use the disk very much and rTorrent doesn't have cache settings.

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  • Tar exclude not working?

    - by Andrew Fashion
    tar -cvf file.tar --exclude=thumbs/ \ --exclude=uploads_event/ \ --exclude=uploads_forum/ \ --exclude=uploads_admin/ \ --exclude=uploads_userpoints/ \ --exclude=uploads_group/ \ --exclude=up_old/ \ --exclude=uploads_user/ \ --exclude=uploads_wall/ \ directory_to_tar/ Do I have it wrong? Trying to tar entire directory but exclude all those directories and any files in those folders completely.

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  • ifcf-ethx problem

    - by Shahmir Javaid
    Every time i run service networkd restart This is what i get Shutting down interface eth0: Device state: 3 (disconnected) [ OK ] Shutting down interface eth1: [ OK ] Shutting down loopback interface: Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown [ OK ] Bringing up loopback interface: Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown Error org.freedesktop.NetworkManagerSettings.InvalidConnection: ifcfg file '/etc/sysconfig/network-scripts/ifcfg-lo' unknown [ OK ] Bringing up interface eth0: ** (process:12951): WARNING **: fetch_connections_done: error fetching user connections: (2) The name org.freedesktop.NetworkManagerUserSettings was not provided by any .service files. Active connection state: activating Active connection path: /org/freedesktop/NetworkManager/ActiveConnection/1 state: activated Connection activated [ OK ] Here is my ifcfg-eth0 # Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller DEVICE=eth0 BOOTPROTO=dhcp DEFROUTE=yes DHCPCLASS= HWADDR=xxx IPV4_FAILURE_FATAL=yes IPV6INIT=no ONBOOT=yes OPTIONS=layer2=1 PEERDNS=yes PEERROUTES=yes TYPE=Ethernet UUID=xxx And my ifcfg-eth1 # Intel Corporation 82541PI Gigabit Ethernet Controller DEVICE=eth1 HWADDR=xxx ONBOOT=no And my ifcfg-lo DEVICE=lo IPADDR=127.0.0.1 NETMASK=255.0.0.0 NETWORK=127.0.0.0 # If you're having problems with gated making 127.0.0.0/8 a martian, # you can change this to something else (255.255.255.255, for example) BROADCAST=127.255.255.255 ONBOOT=yes NAME=loopback Any ideas?

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  • md5sum repeatedly gives different checksum for same file on same machine

    - by Joel
    I have a very small and quite old hard drive disk, about 32G. On to this disk I have copied a largish tar file, about 5G. When I run md5sum to generate a checksum on this file I repeatedly get different results (on the same machine and the same file). This obviously should not happen. If I repeat the experiment with a much smaller file, as expected the checksum is the same each time. I can only assume that because the large file is spanning most of the disk, and it is an old drive, I am experiencing a lot of read errors on the hard drive - and it needs replacing? Could there be any other good reason for this? Something I can do to fix the problem other than buying a new disk? Update: sha1sum also produces inconsistent results.

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  • Server with multiple IP addresses?

    - by RadiantHex
    Hi folks, just wondering how it is actually possible to have a server with multiple IPs I have a python script, and would like to be able to use different IP addresses for different requests. Is this actually possible? EDIT: I'm running CentOS 5 and have 3 IP Addresses asscociated with the machine

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  • List of common ways those could shut down server unexpectedly ?

    - by SpawnCxy
    After running a bash fork bomb which made my webserver down, I think I should be more careful even not under root.I thought it would be totally fine while I'm not under root.So I ignored the warning and ran the bash fork bomb which is :() { :|:& }; : .(Please don't run it if u don't understand this code cuz it will make you system down).And I think I need a list of common ways those could cause a sever shutting down unexpectly even not under root. Any suggestion would be appreciated. Regards `

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  • How do I setup unison to sync a folder one way

    - by Rob
    I have a 1tb NAS that has a 1tb usb external hard attached I have prepared the file system on the usb disk and mounted it I want to 100% sync my data from my nas to the usb disk - but I want it to be incremental and only have the NAS as the 'master' - eg if a file changes on the usb external hard drive I want it to ignore this change as its not the live version (not that I think the files will change on the usb disk but im paranoid the live could get overwritten) Also if a file gets deleted on live I want to retain the deleted file on the usb disk Can unison sync one-way and achive the above for me? if so with simply unison sorce/ target/ Work? Thanks Rob

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  • How can I move my partition in GParted?

    - by reprogrammer
    The following is a screenshot of GParted run on my system. There is a small unallocated space at the beginning of the list. This 1 MiB space is kind of annoying and I'd like to merge with any other partition except /dev/sda1, /dev/sda6 and /dev/sda4. When I right click on the unallocated partition, the only available operation is "New". And, if I click on "New", I get the following error message. It is not possible to create more than 4 primary partitions Any ideas of how to go about merging the small unallocated space with other partitions?

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  • Finding ALL currently used IP addresses of Website

    - by Patrick R
    What steps would you take to discover all (or close to all) IP addresses that are currently used by a website? How would you be as exhaustive as possible without calling a website admin and asking for the list of IP addresses? ;) nslookup works but will vary based on dns server queried. whois is another good tool. Dig, not bad. Let's use Facebook for example. I'm blocking that site for the majority our our company's users, but some are approved for "research". I can not easily use OpenDNS because we all appear to come from the same request IP address. I could change that but don't want to add more vlans than I already have. I also could use block something like regex facebook1 "facebook\.com" (I'm running a cisco firewall) but that's pretty easy to sidestep. All that being said, I'm asking about specifically about finding ip addresses for a domain and not for other methods that I can block a domain name.

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  • Does mailx send mail using an SMTP relay or does it directly connect to the target SMTP server?

    - by iamrohitbanga
    Suppose i send a mail using the following the following command: mailx [email protected] then does mailx first try to find out the SMTP server of my ISP for relaying the mail or does it connect directly. Does it depend on whether my PC has a public IP address or it is behind a NAT. How do I check the settings of mailx on my PC? How can I verify this using tcpdump?

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  • How do I enable TUN/TAP forwarding?

    - by rafal
    I have a program which writes packets (destination address 10.3.0.2) to the TUN/TAP interface. Network: host1|tun0----eth1(10.3.0.1)|-------------------host2|eth1(10.3.0.2)| Wireshark captures these packets from interface tun0 but they are not forwarded to interface eth1. Commands: sysctl -w net.ipv4.ip_forward=1 sysctl -p iptables -A INPUT -i tun+ -j ACCEPT iptables -A FORWARD -i tun+ -j ACCEPT iptables -A INPUT -i tap+ -j ACCEPT iptables -A FORWARD -i tap+ -j ACCEPT /etc/init.d/networking restart /etc/init.d/openvpn restart

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  • Dovecot not working pop3 with postfix

    - by samer na
    $ telnet localhost pop3 Trying ::1... Trying 127.0.0.1... telnet: Unable to connect to remote host: Connection refused $ netstat -l tcp 0 0 *:www : LISTEN tcp 0 0 localhost.localdoma:ipp : LISTEN tcp 0 0 *:smtp : LISTEN tcp 0 0 localhost.localdo:mysql : LISTEN and nothing about dovecot in mail.log or mail.err when I run this service dovecot start I got start: Rejected send message, 1 matched rules; type="method_call", sender=":1.553" (uid=1000 pid=26250 comm="start) interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply=0 destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")) in dovecot.conf protocols = imap imaps pop3 pop3s disable_plaintext_auth = no log_timestamp = "%Y-%m-%d %H:%M:%S " mail_location = maildir:/var/spool/mail/%d/%n mail_access_groups = mail first_valid_uid = 106 first_valid_gid = 106 protocol imap { } protocol pop3 { listen=*:110 pop3_uidl_format = %08Xu%08Xv } protocol lda { postmaster_address = [email protected] mail_plugins = quota log_path = /var/log/dovecot-deliver.log info_log_path = /var/log/dovecot-deliver.log } auth default { mechanisms = digest-md5 plain passdb sql { args = /etc/dovecot/dovecot-mysql.conf } userdb sql { args = /etc/dovecot/dovecot-mysql.conf } user = root }

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  • How do I know if I have KMS enabled?

    - by Attila Oláh
    How can I check if KMS is enabled in my kernel? I've compiled mine with KMS radeon modeset defaulting to 1, but I still suspect that it is not enabled. EDIT: aatiis@aiur ~ $ dmesg | grep drm [drm] Initialized drm 1.1.0 20060810 [drm] Initialized radeon 1.33.0 20080528 for 0000:01:05.0 on minor 0 [drm] Setting GART location based on new memory map [drm] Loading RS780 CP Microcode [drm] Resetting GPU [drm] writeback test succeeded in 1 usecs EDIT 2: aatiis@aiur ~ $ glxinfo | grep render IRQ's not enabled, falling back to busy waits: 2 0 direct rendering: Yes OpenGL renderer string: Mesa DRI R600 (RS780 9612) 20090101 TCL aatiis@aiur ~ $ sudo grep -i kms /var/log/Xorg.0.log [ 57.201] (II) [KMS] drm report modesetting isn't supported.

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  • Strategy to allow emergency access to colocation crew

    - by itsadok
    I'm setting up a server at a new colocation center half way around the world. They installed the OS for me and sent me the root password, so there's obviously a great amount of trust in them. However, I'm pretty sure I don't want them to have my root password on a regular basis. And anyway, I intend to only allow key-based login. On some cases, though, it might be useful to let their technical support log in through a physical terminal. For example, if I somehow mess up the firewall settings. Should I even bother worrying about that? Should I set up a sudoer account with a one-time password that will change if I ever use it? Is there a common strategy for handling something like this?

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  • framebuffer not available. How to install the device /dev/fb/0 on Ubuntu?

    - by Aleyna
    I am trying to run an application that uses framebuffer on 2.6.31-14-generic #48-Ubuntu. All need to do is to install a framebuffer device to get rid of the following error. /dev/fb/0: No such file or directory framebuffer not available. FATAL: no framebuffer available I googled through and found some resources indicating to do that on Grub2 I got nothing though I followed them seamlessly. Any ideas? Thanks

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  • Run a script with Apache2 in a certain directory

    - by TheGatorade
    I am trying to run WebMCP on an Apache2 server. It's got 2 executable files, which I have in /opt/webmcp/cgi-bin/webmcp.lua and /opt/webmcp/cgi-bin/webmcp-wrapper.lua If I run the wrapper from a position that is not /opt/webmcp/cgi-bin it says it cannot find webmcp.lua and gives a 500 error. If I run it from the correct directory it works. My server has webmcp.lua set as directoryindex and it's giving 500 error. It may be because of this problem? /opt/webmcp/cgi-bin/ is already set as documentroot, and is accessible by www-data.

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  • Using find and tar with files with special characters in the name

    - by Costi
    I want to archive all .ctl files in a folder, recursively. tar -cf ctlfiles.tar `find /home/db -name "*.ctl" -print` The error message : tar: Removing leading `/' from member names tar: /home/db/dunn/j: Cannot stat: No such file or directory tar: 74.ctl: Cannot stat: No such file or directory I have these files: /home/db/dunn/j 74.ctl and j 75. Notice the extra space. What if the files have other special characters? How do I archive these files recursively?

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  • fedora liveUSB fails, drops to debug shell

    - by evan
    Trying to install Fedora 15 via a live USB made with unetbootin. I get to the unetbootin boot menu, select Fedora-15-x86_64-Live-Desktop.is, I get to this screen, then it drops into a debug shell with the message sh: can't access tty: job control turned off. The last message is dmseg is dracut Warning: No root device "live:/dev/disk/by-label/Fedora-15-Beta-x86_64-Live-Desktop.is" found. Seems to be the same problem detailed here. Tried to try nk1eto's solution but there is no by-label directory in /dev/disk. There's by-id, by-path and by-uuid.

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  • Using symbolic links with git

    - by Alfredo Palhares
    I used to have my system configuration files all in one directory for better management but now i need to use some version control on it. But the problem is that git doesn't understand symbolic links that point to outside of the repository, and i can't invert the role ( having the real files on the repository and the symbolic links on their proper path ) since some files are read before the kernel loads. I think that I can use unison to sync the files in the repo and and the their paths, but it's just not practical. And hard links will probably be broken. Any idea ?

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