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  • Minimizing windows to tray in xfce

    - by Gryllida
    For XFCE (v. 4.8), I'm searching for possible options to minimize windows to tray (iconify). This means that 1) they're not in the window listing and 2) they're not in the alt+TAB menu and 3) when closed, the window hides (it disappears from window listing but still stays running). "alltray" has some weird GTK-related bug (https://bugs.launchpad.net/alltray/+bug/589831; windows hide but unhiding doesn't do anything; they stay in the tray icon until the user undocks them). "trayer" complains that "another systray is already running" and there's no obvious workaround. This question here is to ask about possible minimalistic (as everything in XFCE is) solutions which don't involve manual compiling, and aren't an overkill like cairo-dock is (a rather bloated gnome-style application which creates a new large 'tray' instead of using the existing one). Thanks!

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  • Setting up squid proxy server to in turn connect using another proxy server [closed]

    - by AnkurVj
    My institute uses the Squid proxy server and authentication mechanism requires username and password to be entered. This means that, I can log in on only one machine at a time and Internet access for me is restricted to that machine. I sometimes require Internet access on multiple machines simultaneously. What previosuly worked for me was the following : On one of my own machines A, I set up a Squid proxy server that allowed all local machines without any username and password. I configured rest of the machines to use this machine A as the proxy server. On machine A I logged into the institute proxy server using my browser. This way, I could access Internet from all my machines, by effectively channeling my requests through the server A. Recently, I lost that machine and configuration and now I tried to set it up again in the same manner. However, I cant seem to remember exactly how I made it work. I keep getting Connection Refused (111) on other machines. My guess is that my squid server isnt able to forward requests from other machines to the actual squid server. I could use any help for debugging this problem. I don't want to use alternatives such as ssh tunneling. This solution has worked for me in the past, I just don't remember how to set it up the same way again.

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  • Why assign write and execute permissions to a group when executing web scripts?

    - by PeanutsMonkey
    If I have a script that is to be executed by the nobody user, why is there a need to assign group write and execute permissions. For example in the article at http://www.zzee.com/solutions/unix-permissions.shtml, it notes that the permission 755 should be assigned to scripts on a web server. I understand that the user nobody is treated as others and as the owner of the script I would like full permissions. Am I missing something?

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  • Cant remove/delete symlink

    - by user477519
    I have tried to create a symlink and it threw this error: ln: accessing `.test': Permission denied Now I can't unlink or delete the symlink file. Tried Googling for help but could not find a solution. Please find the results of following commands. stat .test : File: `.test'stat: cannot read symbolic link `.test': Permission denied Size: 26 Blocks: 0 IO Block: 16384 symbolic link Device: 1fh/31d Inode: 312075453 Links: 1 Access: (0777/lrwxrwxrwx) Uid: (11160/ chatt) Gid: (11307/ pgr) Access: 2012-11-12 11:36:51.167327500 +0000 Modify: 2012-11-12 11:36:51.163331700 +0000 Change: 2012-11-12 11:36:51.163331700 +0000 Birth: - chattr -i .test: chattr: Permission denied while trying to stat .test lsatter .test lsattr: Operation not supported While reading flags on .test Any help would be appreciated. Thanks

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  • How can I find all hardlinked files on a filesystem?

    - by haimg
    I need to find all hardlinked files on a given filesystem. E.g. get a list of files, each line contains linked pairs, or triplets, etc. I understand more or less how to do it, one needs to create a dictionary keyed by inode for all files/directories on a filesystem, exclude "." and ".." links, and then indodes with more than one name are hardlinks... But I hope that maybe a ready-made solution exists, or someone already wrote such a script.

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  • Blocking HTTPS and P2P Traffic

    - by Genboy
    I have a Debian server running at the gateway level on a LAN. This runs squid for creating block lists of websites - for eg. blocking social networking on the LAN. Also uses iptables. I am able to do a lot of things with squid & iptables, but a few things seem difficult to achieve. 1) If I block facebook through their http url, people can still access https://www.facebook.com because squid doesn't go through https traffic by default. However, if the users set the gateway IP address as proxy on their web browser, then https is also blocked. So I can do one thing - using iptables drop all outgoing 443 traffic, so that people are forced to set proxy on their browser in order to browse any HTTPS traffic. However, is there a better solution for this. 2) As the number of blocked urls increase in squid, I am planning to integrate squidguard. However, the good squidguard lists are not free for commercial use. Anyone knows of a good squidguard list which is free. 3) Block yahoo messenger, gtalk etc. There are so many ports on which these Instant Messenger softwares work. You need to drop lots of outgoing ports in iptables. However, new ports get added, so you have to keep adding them. And even if your list of ports is current, people can still use the web version of gtalk etc. 4) Blocking P2P. Haven't been able to figure out how to do this till now.

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  • VPN on a ubuntu server limited to certain ips

    - by Hultner
    I got an server running Ubuntu Server 9.10 and I need access to it and other parts of my network sometimes when not at home. There's two places I need to access the VPN from. One of the places to an static IP and the other got an dynamic but with DynDNS setup so I can always get the current IP if I want to. Now when it comes to servers people call me kinda paranoid but security is always my number one priority and I never like to allow access to the server outside the network therefor I have two things I have to have on this VPN. One it shouldn't be accessiable from any other IP then these 2 and two it has to use a very secure key so it will be virtually impossible to bruteforce even from the said IP´s. I have no experience what so ever in setting up VPNs, I have used SSH tunneling but never an actuall VPN. So what would be the best, most stable, safest and performance effiecent way to set this up on a Ubuntu Server? Is it possible or should I just set up some kind of SSH Tunnel instead? Thanks on beforehand for answers.

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  • How can I merge the gnome clipboard and the X selection?

    - by TREE
    I'm constantly frustrated by the two separate clipboards in X/Gnome. I'm constantly doing things like control-C to copy, and then middle-click to paste, and getting the wrong data. Or select something, then go where I want to paste it, and selecting what I want to paste over, only to lose my first selection! Is there any way to merge these two clipboards?

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  • Want to add a new domain to my postfix, but mails not delivered (mail look back to myself)

    - by user74850
    Hi everybody, My host relay is working but I was aksed to add a new domain (like external.example.com). I have added in main.cf the new fqdn in relay_domains relay_domains = $mydestination, example.com,example2.com, externe.example.com and in transport example.com smtp:[192.168.1.22] example2.com smtp:[192.168.1.22] external.example.com smtp:[192.168.1.22] Mails sent to users with example.com and example2.com domain are well delivered. But for mails to external.example.com i got this message Mar 17 16:47:52 relayhost postfix/smtp[11948]: 754E1876A01: to=<[email protected]>, relay=relayhost2.example.com[80.81.82.83]:25, delay=19555, delays=19525/0.01/30/0, dsn=4.4.6, status=deferred (mail for external.example.com loops back to myself) I read another Q/A about the same issue right here, but it's not helping me. Can you ?

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  • Mail server Backup script

    - by Paul Stevens
    Hello, Im looking for the best way to accomplish a full backup of our "vmail" accounts on our mail server (CentOS "iRedMail" 5.1). I also need to split on 4GB parts the resulting tar or bzip compressed backup, and get this DVD-RW burned, on same server. The idea is to get this procedure to running overnight, once a week. Our mail server holds about 45GB of information. I will appreciate any advise or help on this topic. Thanks.

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  • How do I tell mdadm to start using a missing disk in my RAID5 array again?

    - by Jon Cage
    I have a 3-disk RAID array running in my Ubuntu server. This has been running flawlessly for over a year but I was recently forced to strip, move and rebuild the machine. When I had it all back together and ran up Ubuntu, I had some problems with disks not being detected. A couple of reboots later and I'd solved that issue. The problem now is that the 3-disk array is showing up as degraded every time I boot up. For some reason it seems that Ubuntu has made a new array and added the missing disk to it. I've tried stopping the new 1-disk array and adding the missing disk, but I'm struggling. On startup I get this: root@uberserver:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md_d1 : inactive sdf1[2](S) 1953511936 blocks md0 : active raid5 sdg1[2] sdc1[3] sdb1[1] sdh1[0] 2930279808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] I have two RAID arrays and the one that normally pops up as md1 isn't appearing. I read somewhere that calling mdadm --assemble --scan would re-assemble the missing array so I've tried first stopping the existing array that ubuntu started: root@uberserver:~# mdadm --stop /dev/md_d1 mdadm: stopped /dev/md_d1 ...and then tried to tell ubuntu to pick the disks up again: root@uberserver:~# mdadm --assemble --scan mdadm: /dev/md/1 has been started with 2 drives (out of 3). So that's started md1 again but it's not picking up the disk from md_d1: root@uberserver:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid5 sde1[1] sdf1[2] 3907023872 blocks level 5, 64k chunk, algorithm 2 [3/2] [_UU] md_d1 : inactive sdd1[0](S) 1953511936 blocks md0 : active raid5 sdg1[2] sdc1[3] sdb1[1] sdh1[0] 2930279808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] What's going wrong here? Why is Ubuntu trying to pick up sdd into a different array? How do I get that missing disk back home again? [Edit] - After adding the md1 to mdadm.conf it now tries to mount the array on startup but it's still missing the disk. If I tell it to try and assemble automatically I get the impression it know it needs sdd but can't use it: root@uberserver:~# mdadm --assemble --scan /dev/md1: File exists mdadm: /dev/md/1 already active, cannot restart it! mdadm: /dev/md/1 needed for /dev/sdd1... What am I missing?

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  • Multiple virtual VLAN interfaces on single NIC (Debian)

    - by RayQuang
    I'm trying to setup multiple virtual interfaces with VLAN's on a single NIC. I'm running Debian Squeeze. Currently this is my /etc/netowrk/interfaces auto eth0.10 iface eth0.10 inet dhcp This gives me a working connection, however I'm not sure how to configure several like these on a single NIC so I can use multiple external IP's. I have tried aliasing the VLAN's like so: iface eth0.10:1 But that was not successful and it said failed to bring up interface. And suggestions would be greatly appreciated :)

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  • Error accessing other groups files in apache

    - by Shashank Jain
    I am using Cloud9 IDE on my server, which creates files with default permission 640. As a result when I try to open those file via HTTP, apache shows permission denied error. When IDE is running as root user, files created belong to root:root. Also, when I see as what user is apache running, all its processes are shown to be running as root user. I cannot understand why still it cannot access files. I know if I add apache's user to group of file owner, it will work. But, I don't know which user to add. PS: I don't want to change permission of each file I create. I want less troubling solution.

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  • Logfiles filling with iptables logging

    - by Peter I
    OS: Debian 6 Server Version I have different logfiles which are filling up: user@server:/var/log$ ls -lahS | head total 427G -rw-r--r-- 1 root root 267G Nov 2 17:29 bandwidth -rw-r----- 1 root adm 44G Nov 2 17:29 kern.log -rw-r----- 1 root adm 27G Nov 2 17:29 debug -rw-r----- 1 root adm 23G Oct 27 06:33 kern.log.1 -rw-r----- 1 root adm 17G Nov 2 17:29 messages -rw-r----- 1 root adm 14G Oct 27 06:33 debug.1 -rw-r----- 1 root adm 12G Nov 2 17:29 syslog -rw-r----- 1 root adm 12G Nov 1 06:26 syslog.1 -rw-r----- 1 root adm 9.0G Oct 27 06:33 messages.1 So I looked up the file /etc/iptables.up.rules which had those lines in it: -A FORWARD -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A FORWARD -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: -A OUTPUT -o eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_OUT: -A INPUT -i eth0 -j LOG --log-level 7 --log-prefix BANDWIDTH_IN: So deleting those lines will solve my problem. But how would I edit those lines without losing their functionality?

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  • How to install php soap with rpm packages in centos 6.4 x86_64

    - by HPM
    I want to install php-soap, centos says: [root@LMS-Cent64 soap]# rpm -ivh php-soap-5.3.3-22.el6.x86_64.rpm error: Failed dependencies: php-common(x86-64) = 5.3.3-22.el6 is needed by php-soap-5.3.3-22.el6.x86_64 after installing php-common(x86-64): [root@LMS-Cent64 soap]# rpm -ivh php-common-5.3.3-22.el6.x86_64.rpm Preparing... ########################################### [100%] package php-common-5.3.3-23.el6_4.x86_64 (which is newer than php-common-5.3.3-22.el6.x86_64) is already installed file /usr/lib64/php/modules/phar.so from install of php-common-5.3.3-22.el6.x86_64 conflicts with file from package php-common-5.3.3-23.el6_4.x86_64 What to do now?

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  • Should I quit using Ifconfig?

    - by Zhen
    With the servers that mount Infiniband cards, when I use the ifconfig command I have the warning: Ifconfig uses the ioctl access method to get the full address information, which limits hardware addresses to 8 bytes. Because Infiniband address has 20 bytes, only the first 8 bytes are displayed correctly. Ifconfig is obsolete! For replacement check ip. Should I quit using ifconfig? It is deprecated in favor of ip command? Or it will be update in the near future.

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  • overriding default scheduler for blkio requests in cgroups

    - by Aamir Mushtaq
    I am trying to optimize a set of servers that have to reside on single machine. i.e. i can have multiple application server, a DB server and of course a samba server as well in same instance. Now I was looking into several optimizing options available to me. In my quest, i did my tuning of the network stack. coming to the CPU, MEMORY and the BLKIO tweaks, i am using CGROUPS. The problem i am facing is that for enhanced performance in the nature of the applications that i am running, the CFQ Scheduler that is implemented for the BLKIO subsystem is not optimal. I was looking more for a Deadline Scheduler because that will serve my purpose well. My question is whether it is possible for us to change the scheduler in the kernel compilation itself for the BLKIO to Deadline and it will reflect in my usage of [CGROUP hierarchies][3]? Since when running the service cgconf, a new fs is mounted and i dont want it to revert to CFQ scheduler. I also welcome any suggestions that will enable me to have more control over my resources.

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  • debian 6 losing a large amount of packets

    - by Sc0rian
    I have a rather strange problem. We covered all the obvious hardware related issues (different nic, eth cable and switch) however I cannot seem to stop eth dropping packets. I have 4 servers all exactly the same. driver: e1000e version: 1.2.20-k2 firmware-version: 1.8-0 bus-info: 0000:06:00.0 They are all running the latest kernel(2.6.32-5-amd64). However they do this: RX packets:17073870634 errors:0 dropped:14147208 overruns:0 frame:0 another server: eth0 Link encap:Ethernet HWaddr e0:69:95:05:2f:cb inet addr:10.10.10.86 Bcast:10.10.10.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5455209277 errors:0 dropped:375445 overruns:0 frame:0 TX packets:3666134366 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:6688414486673 (6.0 TiB) TX bytes:1611812171539 (1.4 TiB) Interrupt:20 Memory:d0600000-d0620000 eth1 Link encap:Ethernet HWaddr 00:1b:21:b7:7a:ce inet addr:10.10.0.86 Bcast:10.10.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:15473695728 errors:0 dropped:5808325 overruns:0 frame:0 TX packets:20112364421 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:9192378766434 (8.3 TiB) TX bytes:20216368266761 (18.3 TiB) Interrupt:17 Memory:d0280000-d02a0000 A massive amount of dropped packets. I have tried to load on the latest driver, 1.9.5. This did nothing. I'm not sure what else to do.

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  • iptables ACCEPT policy

    - by kamae
    In Redhat EL 6, iptables INPUT policy is ACCEPT but INPUT chain has REJECT entry in the end. /etc/syconfig/iptables is as below: *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT Do you know why the policy is ACCEPT not DROP? I think setting DROP policy is safer than ACCEPT in case to make mistake in the chain. Actually the policy is not applied to any packet: # iptables -L -v Chain INPUT (policy ACCEPT 0 packets, 0 bytes)

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  • How to force mdadm to stop RAID5 array?

    - by lucek
    I have /dev/md127 RAID5 array that consisted of four drives. I managed to hot remove them from the array and currently /dev/md127 does not have any drives: cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid1 sdd1[0] sda1[1] 304052032 blocks super 1.2 [2/2] [UU] md1 : active raid0 sda5[1] sdd5[0] 16770048 blocks super 1.2 512k chunks md127 : active raid5 super 1.2 level 5, 512k chunk, algorithm 2 [4/0] [____] unused devices: <none> and mdadm --detail /dev/md127 /dev/md127: Version : 1.2 Creation Time : Thu Sep 6 10:39:57 2012 Raid Level : raid5 Array Size : 8790402048 (8383.18 GiB 9001.37 GB) Used Dev Size : 2930134016 (2794.39 GiB 3000.46 GB) Raid Devices : 4 Total Devices : 0 Persistence : Superblock is persistent Update Time : Fri Sep 7 17:19:47 2012 State : clean, FAILED Active Devices : 0 Working Devices : 0 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Number Major Minor RaidDevice State 0 0 0 0 removed 1 0 0 1 removed 2 0 0 2 removed 3 0 0 3 removed I've tried to do mdadm --stop /dev/md127 but: mdadm --stop /dev/md127 mdadm: Cannot get exclusive access to /dev/md127:Perhaps a running process, mounted filesystem or active volume group? I made sure that it's unmounted, umount -l /dev/md127 and confirmed that it indeed is unmounted: umount /dev/md127 umount: /dev/md127: not mounted I've tried to zero superblock of each drive and I get (for each drive): mdadm --zero-superblock /dev/sde1 mdadm: Unrecognised md component device - /dev/sde1 Here's output of lsof|grep md127: lsof|grep md127 md127_rai 276 root cwd DIR 9,0 4096 2 / md127_rai 276 root rtd DIR 9,0 4096 2 / md127_rai 276 root txt unknown /proc/276/exe What else can I do? LVM is not even installed so it can't be a factor.

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  • Gentoo on Mac Mini - can't get framebuffer to work

    - by user42055
    I have the latest Gentoo on an intel mac mini with 945G graphics. I'm trying to start X (with no config) but it complains that /dev/fb0 doesn't exist. I've tried adding the following options to the kernel boot params: video=intelfb:mode=800x600-32@60,accel,hwcursor vga=761 Because I read that the fb might not be enabled unless you set a vga= option. Unfortunately the kernel doesn't recognise that option. If I changed it to vga=ask it presents me a list of about 6 text modes no greater than 80x60. In the kernel I have agpgart, drm (using i830 module) and vga text console compiled in. What am I not doing right ?

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