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• Lightweight window manager for Linux for Virtual Desktop / Multimon

  - by mattcodes

  Previous used Ubuntu Gnome with Compiz but for my basic spec intel macbook (4 years old) its a little too heavyweight. So for now Im back on my macbook with os x, but now considering going back to Linux. Im looking for a window manager that has the following properties: Supports virtual desktop (need 4 minimum) Works well with multi monitors - can move an app with shortcut from one monitor to the other (on same virtual desktop) Can remember window position (i.e. open vim on 2 monitor) - however must coerce everything back to first screen when 2nd screen is unplugged Keyboard shortcut friendly Not too hard to install Works well with minimum hardware such as integrated graphics Please suggest and share your experiences

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• Installing any linux distro on new netbook hangs midway

  - by Neigyl R. Noval

  I have just bought a new netbook, Lenovo S110 with a starter Window 7, 32 bit Operating system. I wanted to wipe away Windows and go with Debian or Ubuntu. I have successfully made my USB drive bootable with the Debian net install. The problem is, my computer always hangs up at the start of the installation (with the latter shown on screen). Keyboard stopped responding , and USB was probably not reading (since it was not blinking anymore). I know the bootable USB drive with Debian installer is working since installation works on other netbooks. What should I do to install Linux on my netbook?

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• Firefox hangs with java in Linux

  - by Xolve

  I am using Firefox 3.6 on Linux and I haveJava 6 update 15. Obviously I am using the newer plugin type. Whenever I open a page with Java applet it just becoms unresponsive and hangs. I tried with Chrome. I think it detects the Java plugin from mozilla's plugins folder. Due to multiprocess architecture it doesn't hang and shows the initial applet loading window but then it reports that the plugin has crashed. The only way I can run Java applets is to download the class file and make an html file and run the applet using applet viewer.

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• Linux File Permissions & Access Control Query

  - by Jason

  Hi, Lets say I am user: bob & group: users. There is this file: -rw----r-- 1 root users 4 May 8 22:34 testfile First question, why can't bob read the file as it's readable by others? Is it simply that if you are denied by group, then you are auto-blacklisted for others? I always assumed that the final 3 bits too precedence over user/group permission bits, guess I was wrong... Second question, how is this implemented? I suppose it's linked to the first query, but how does this work in relation to Access Control, is it related to how ACLs work / are queried? Just trying to understand how these 9 permission bits are actually implemented/used in Linux. Thanks alot.

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• VirtualBox: Grub sees hard drive, Linux does not

  - by thabubble

  I installed Linux on my second hard drive. I can boot to it just fine. But when I try to boot it from a Windows 7 host using http://www.virtualbox.org/manual/ch09.html#rawdisk, grub sees it and can load vmlinuz and initramfs. Log: :: running early hook [udev] :: running hook [udev] :: Triggering uevents... :: running hook [plymouth] :: Loading plymouth...done. ... Waiting 10 seconds for device /dev/disk/by-uuid/{root UUID} ... ERROR: device 'UUID={root UUID}' not found. Skipping fsck. ERROR: Unable to find root device 'UUID={root UUID}' It then drops me into a recovery shell. I checked "/etc/fstab" and it's empty, there are also no sd* devices in dev, the only thing in /dev/disk/by-id is a VBox CD device. I'm not too good with these kinds of things so help would be greatly appriciated.

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• Learn Linux Command Line for Web Server Management [closed]

  - by Jonathan

  I've searched high and low for a good resource for learning the Linux command line. I've found a handful of separate resources, but none that really can assist in web server management. I'm currently learning through trial an error with 'man' pages, along with Google. I was just wondering if anyone had a solid resource that they used to learn, and would be willing to share it with me. Thanks so much for your time, I really appreciate it! EDIT: I have a few CentOS servers at current, and I know the basics, I'm just trying to get to a more advanced level.

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• Setting up linux server with multiple access rights

  - by Mark

  I am a graduate student and want to set up a linux server (preferably Ubuntu) in my office. I also want to give my friends SSH access to that box. My question is can I set up my server such that I can give one of my friends rights to install software on my machine but he cannot brows around outside the directory he is allowed to? Can I set up multiple apache instances (on different ports) for different people? so each has access to their own apache instance?

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• One way sync with either Dropbox or Google drive on linux and windows

  - by sup

  I could not google this one. I would like to use Dropbox or Google drive only as backup, so I would like to ensure I only upload to those services and never download (unless done manually via the web interface). There would be several of us uploading stuff to one account, so we would need to ensure we don't accidentaly delete something on another guy's machine by doing some changes on our local machine. Is there a simple way to do this automatically - i.e. by running a daemon that will upload eveyuthing in a given folder but never download anything? I am on linux, so that complicates things a bit, but I am also interested in windows solutions.

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• Directory "Bookmarking" in Linux

  - by Jason R. Mick

  Aside from aliasing and links, is there an easy way in Linux to tag commonly used directories and to navigate to a commonly used directory from the terminal. To be clear the disadvantages I see with alternative approaches, and why I want a bookmark/favorites like system: alias Cons: Too specific (every new favorite requires a new alias...although you could in theory make an alias that echo append your dir as a new alias, which would be sort of clever). Can't nest favorites in folders (can't think of a simple solution to this outside of heavy config scripting). links Cons: Clutter directory make ls a headache. pushd/popd Cons: Non-permanent (without shell config file scripting), can't nest favorites in directories, etc. Granted I have multiple ideas for making my own non-standard solution, but before I have at it I wanted to get some perspective on what's out there and if there is nothing, what is a recommended approach. Does anyone know of such a favorites/bookmark-like terminal solution?

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• Linux freezes every few seconds

  - by Zeppomedio

  We're having an issue where one our Linux boxes (Ubuntu 10.04 LTS, running on EC2 with a quadruple-large size, 68GB of RAM and 8 virtual cores with 3.25GHz each) freezes up every few seconds. Typing in an ssh session will freeze, and running strace on one of the Postgresql processes that's running usually shows: 02:37:41.567990 semop(7831581, {{3, -1, 0}}, 1 for a few seconds before it proceeds (it always gets stuck at that semop). OProfile shows that most of the time is spent in the kernel (60%) versus 37% in Postgresql. The result of these halts (which began suddenly a day ago) is that load on the box has gone from 0.7 to 10+, and causes our entire stack to slow done. Any ideas on how to track down what's going on? iostat doesn't show the disks being particularly slow or overloaded, and top shows user cpu % spike from 8% to about 40% whenever these back-ups happen.

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• Linux USB to work as cd rom on mac

  - by user157483

  I am working in driver development in linux USB modules. I have written driver for usb and it is working as cd rom in windows machine 1)I made first partation as fat32 "modprobe g_hidmass file=/dev/mmcblk0p1 cdrom=1 stall=0 removable=1" this works fine in windows 2)I made first partation as hfs partation "modprobe g_hidmass file=/dev/mmcblk0p1 cdrom=1 stall=0 removable=1" but same thing i applied with hfs partation in MAC it is getting error like this "The disk you inserted was not readable by this computer" in diskutil it is shown as CD-rom but not reading the file system. frame like this Please help me how can I overcome this error...

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• Linux router with diffent gateways for incomming and outgoing connections

  - by nkout

  I have the following topology: LAN Users:192.168.1.2 - 254 (192.168.1.0/24) gateway1: 192.168.2.2/24 used for all outgoing connections of LAN users (default gateway) gateway2: 192.168.3.2/24 used for incoming services (destination NAT, ports 80,443 are forwarded to 192.168.2.1) linux router-server R eth0 192.168.1.1/24: LAN eth1 192.168.2.1/24: WWAN1 eth2 192.168.3.1/24: WWAN2 I want to: route all outgoing traffic coming from LAN and R via 192.168.2.2 route the responses to incoming connections via 192.168.3.2 My config: ifconfig eth0 up 192.168.1.1 netmask 255.255.255.0 ifconfig eth1 up 192.168.2.1 netmask 255.255.255.0 ifconfig eth2 up 192.168.3.1 netmask 255.255.255.0 echo 0 >/proc/sys/net/ipv4/ip_forward route add default gw 192.168.2.2 iptables -t nat -A POSTROUTING -d !192.168.0.0/16 -j MASQUERADE I want to add iptables rule to mark incoming traffic from WWAN2 and send back the responses to WWAN2, while keeping default gateway on WWAN1

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• How to cleanup tmp folder safely on Linux

  - by Syncopated

  I use RAM for my tmpfs /tmp, 2GB, to be exact. Normally, this is enough but sometimes, processes create files in there and fail to cleanup after themselves. This can happen if they crash. I need to delete these orphaned tmp files or else future process will run out of space on /tmp. How can I safely garbage collect /tmp? Some people do it by checking last modification timestamp, but this approach is unsafe because there can be long-running processes that still need those files. A safer approach is to combine the last modification timestamp condition with the condition that no process has a file handle for the file. Is there a program/script/etc that embodies this approach or some other approach that is also safe? Incidentally, does Linux/Unix allow a mode of file opening with creation wherein the created file is deleted when the creating process terminates, even if it's from a crash?

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• Remote viewing on a Linux server?

  - by Zeno

  I have a Slackware Linux server that doesn't have a monitor. It doesn't run any GUIs. Is there a way to remotely access the screen? I always use SSH, but there are times where the SSH services fails and I can't do anything (nor even tell what the problem is). I use Teamviewer from my Windows computer to other PCs, but is there anything I can use to remotely view this from a Windows machine? I also want to see what it's doing at boot, before the SSH service starts.

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• How are Linux files and applications organized?

  - by doup

  Hi there, I'm a newbie Linux (Ubuntu) user and I'll like to know if someone can give some advices of where to install stuff, which folders don't touch, which is the meaning of each folder and so on. My first concern is, should everything go into my home folder? I've installed "manually" Komodo Edit (it's an IDE) and it has gone to my home folder, I really don't like the idea of having an application there. (in windows I used to have my workfiles/pictures/downloads... partition and then the OS partition with all the apps). So, is there any place where I could install this software? Any advice for having my home folder ordered? Maybe I should create an apps folder in my home dir? Thanks in advance. :) pd: most of the time I use apt to install stuff, but I don't always found the software I want there...

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• Disabling mouse acceleration in X.Org (Linux)

  - by aib

  This is the Linux version of my Disabling mouse acceleration in Mac OS X question. Hopefully I'll get an answer this time. I am tired of mouse acceleration and want to have a completely linear mouse response. This is easily achievable through any of the 5 or so methods (some subtly implied) on the X.Org wiki page on pointer acceleration. However, they also disable velocity scaling. I don't want a 1:1 mapping between device and screen coordinates. I want a 1:N mapping where N is a constant. Any ideas?

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• Problems connecting to a linux file server from windows 7

  - by Rister

  I have an old Windows 2000 machine that I'm trying to replace because it is freezing periodically. It is used primarily for email but it does need to be connected to the two linux file servers ("dino1" and "dino2") that are in the office. When I tried to get the new Windows 7 machine to connect I can't find the user account that was being used (or I can't log on to the share). On the old machine the users all logged in as Administrator on the local machine and entered the password ("fuzzypickels") to log onto the share. To me, it seems like the username ought to be Administrator, but when I enter that with "fuzzypickels" it gives me an error that I've got either the username or the password or both incorrect. Is there something missing in my assumptions? Or is there something I can do to recover the username from the old machine?

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• College wifi works easily on Linux, but not on Windows

  - by user52849

  In Linux: After connecting to the college wifi, going to the network login page logging in, the internet works perfectly as it should. In Windows: After connecting to the college wifi, going to the network login page, logging in, Windows shows "Internet access" and the wireless icon turns white. But still after that, regardless of the browser being used, attempting to accessing any page just shows "Sending request". It does work though after a lot of tries, but only in intervals. But when running Ubuntu 11.10 in VirtualBox, it works properly just like booting in Ubuntu, even if it isn't working on Windows. The college wifi service is really crappy and has been unable to solve this problem. I'm pretty sure there should be a solution for this, but what? What is it that Ubuntu is doing right and Windows isn't? Windows settings set to "Automatically detect settings" and no proxy server used.

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• Linux will not activate wireless after device has been re-enabled

  - by XHR

  Using a Eee 900A netbook by Asus. By pressing Fn + F2, I can disable or enable the wireless chip on the netbook, a blue LED indicates the status. I've been able to connect to wireless networks just fine with this netbook. However, if the wireless chip ever becomes disabled, I have to reboot to get my network connection back. This generally happens when suspending. For some reason the LED will be off and I have to hit Fn + F2 for it to light up again. However, after doing so, Linux will not reconnect to the network. It simply changes the wireless status from "wireless is disabled" to "device not ready". Even worse, I've recently had issues with the chip being enabled at boot, thus making it nearly impossible to get connected. I've searched around on-line but haven't found much of anything useful on this. This happens on all kinds of different distros including Ubuntu 9.10 Netbook, EeeBuntu 4 beta, Jolicloud and Ubuntu 10.04 Netbook.

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• Trying to get MYLDAPAdmin working on Scientific Linux

  - by techsjs2012

  I am trying to get MYLDAPAdmin working on Scientific Linux. I downloaded it and installed it but I am getting the following message. It looks like my PHP is not setup for LDAP. Can someone help me? Missing required extension Your install of PHP appears to be missing LDAP support. Please install LDAP support before using phpLDAPadmin. (Dont forget to restart your web server afterwards) After adding php-ldap.. I am now getting this error Unable to connect to LDAP server dvldap01.uftwf Error: Can't contact LDAP server (-1) for user error Failed to Authenticate to server Invalid Username or Password.

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• Need help automating a task in Linux

  - by Niphoet

  I'm still kind of new to Linux, but here's what I'm trying to do. I need to copy all subdirectories and files from one directory to another ever 5 minutes or so, with the old data automatically being overwritten with the new data. I'd also like this to run at startup. Is there any way this can be done? If so, what program would I need to schedule the automation and what is the command line I would need (cp ???). Thanks in advance!

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• Ubuntu Linux -- create custom burnable/bootable DVD image?

  - by ashgromnies

  I recently developed some kiosk software that runs on Ubuntu Linux, and my client needs me to set up ten more computers with the complete software package(and that number will only grow in the future). So I'm looking for a way to make this less of a pain in the neck and prevent me from shooting myself in the foot -- I had to disable some things on the installations of the operating systems like screensavers, automatic updates, etc. that would pop up and disrupt the kiosk operation. I don't feel comfortable doing that by hand across 10 computers, it seems stupid. Does anybody have recommendations for software that would let me burn an installable DVD with a complete image of the hard drive from one of the devices? I've looked at Clonezilla, G4L, and PartImage and I'm still not quite sure if any of them offer what I need. I know PartImage for sure won't work, because it doesn't support Ext4.

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• delete multiple files on linux with spaces in file names

  - by raido

  I have a directory on my Linux box with over 10000 files that I have to delete. Running... sudo rm -rf /var/tmp/* Gives the error message... sudo: unable to execute /bin/rm: Argument list too long The solution to this is to run sudo find /var/tmp | xargs sudo rm This only works for files with no spaces in the file name. However, some of the files have names with spaces in them and they are not deleted. For example, if a file is named 'A File With Spaces in the Name.dat', Running the command gives me errors like this.... rm: cannot remove `/var/tmp/A': No such file or directory rm: cannot remove `File': No such file or directory rm: cannot remove `With': No such file or directory rm: cannot remove `Spaces': No such file or directory rm: cannot remove `in': No such file or directory rm: cannot remove `the': No such file or directory rm: cannot remove `Name.dat': No such file or directory How do I pass the complete file path to xargs sudo rm without breaking up the file name.

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• OpenBSD: Gateway outside subnet (works in Linux)

  - by kshade

  We need to set up an OpenBSD host to use a default gateway that's outside of it's subnet. This is all I need to do on Linux (not the actual IPs) to achieve it: ifconfig eth0 33.33.33.33/31 up route add 33.33.33.254 dev eth0 route add default gw 33.33.33.254 The problem is that we don't know the proper equivalent of the middle command in OpenBSD. The man page says: If the destination is directly reachable via an interface requiring no intermediary system to act as a gateway, the -iface modifier should be specified; Sadly we can't seem to figure out how to make it work with that. This is a virtual host on an OVH server, they have documentation for many other operating systems showing how to do it here: http://help.ovh.co.uk/BridgeClient

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• Is there Linux Live USB that works with Snow Leopard macbook pro from 2010 april

  - by rofrol

  Hello, I was searching for a long time a Linux Live USB that I can boot my macbook pro from. Is there such distro so I can install it on Snow Leopard or Windows 7? UPDATE I've found this: "isohybrid" CD images (..) are special in that as well as the normal CD-based ISO9660 filesystem they also contain a valid-looking DOS-style partition table. Thus, if you simply copy one of these images raw to a USB stick a normal PC BIOS will boot the image directly. (...) Finally: I'd like to add support into xorriso for creating the nasty HFS hybrid images that are needed for booting Macs. The code that does this in cdrkit is probably some of the worst that I've ever worked with, and I'd like to get away from it. If only Apple hadn't stupidly built their proprietary platform around this shit and had used open standards instead Source

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