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• MySQL and User level logging

  - by Adraen

  I have been looking at logging only certain users activity in MySQL. I found that the logging could be enabled or disabled for all users but one of the service using the db does a lot of queries and therefore I would like to only log specific users. Google told me that a flag can be SET to enable disable logging, however, I cannot modify the service DB connection code and asking every single user to enable logging before they do anything might not be as reliable as I want. So, do you know if there is any way to log only a set of users queries ? Thanks !

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• SSH from mac to linux -> start gnome-session -> X11 keyboard mapping all messed up.

  - by Justin

  I have 2 computers: echo.local is running Ubuntu 9.04. justin.local is running Mac OS 10.6.1. X11 version on the mac is 2.3.4. I open X11 on the mac, and open a new xterm window (Applications Menu - Terminal), everything is fine. Keyboard works as expected. I do ssh -X echo.local from the mac (connecting to the linux box), and from the linux command prompt, start xterm - everything is fine. Keyboard works as expected. I do gnome-session from the linux command prompt (through SSH), gnome launches, but keyboard mapping is ALL types of screwed up. If I kill gnome-session and open an xterm via ssh, keyboard mapping is still screwed up. If I then kill the SSH session entirely, and do X11 - Applications Menu - Terminal, opening a brand new xterm window on the mac with no SSH session running at all ... keyboard mapping is still screwed up. Only after I quit X11 and relaunch, is the keyboard mapping back to normal. Keyboard layout under GNOME is Apple-MacBook/MacBook Pro.

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• Recommendations on managing dot files for users using Puppet

  - by Beaming Mel-Bin

  Goal is to have a collection of dot files (.bashrc, .vimrc, etc.) in a central location. Once it's there, Puppet should push out the files to all managed servers. I initially was thinking of giving users FTP access where they could upload their dot files and then having an rsync cron job. However, it might not be the most elegant or robust solution. Wanted to see if anyone else had some recommendations.

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• Why no multiple instances of Firefox on Linux as on Windows?

  - by Jack

  On Windows If I run Firefox as user jack, and then try to start another instance of firefox I will be unable to, as one is already running. If I choose to run firefox as administrator, then I can have two instances of firefox, separate from each other side by side, because they are under different user accounts. This does not seem to be true on Linux. As user jack if I start firefox, like on windows I am unable to start a new instance. If I open a terminal and change to root, set XAUTHORITY to jacks .Xauthority and try to start firefox as root....I get the error that firefox is already running. Why is this? Please don't spare any technical details in your answers....thankyou.

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• Can I create an SSH user which can access only certain directory?

  - by RiMMER

  I have a Virtual Private Server which I can connect to using SSH with my root account, being able to execute any linux command and access all the disk area, obviously. I would like to create another user account, which would be able to access this server using SSH too, but only to a certain directory, for example /var/www/example.com/ For example, imagine this user has a HUGE error.log file (500 MB) located in /var/www/example.com/logs/error.log When accessing this file using FTP, this user needs to download 500 MB to view the last lines of the log, but I'd like him to be able to execute something like this: tail error.log Therefore I need him to be able to access the server using SSH, but I don't want to grant him access to all server areas. How can I do this?

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• How to make Synaptics touchpad work better on Linux?

  - by whitequark

  I have Debian Squeeze currently installed on a Samsung N250 netbook with a Synaptics touchpad. These touchpads are, generally, good, and everything works perfectly on Windows. The support is extremely sucky on Linux through. Of course it has all the cool features like two-finger scrolling, but the cursor (or whatever is a replacement for cursor when scrolling) is trembling awfully. It trembles when I just keep the finger on touchpad, it shakes awfully if the finger is close to the top of touchpad, and when I'm scrolling with it (no matter with two fingers or one), the page shakes a lot too. None of this behavior is observed even in Windows XP with just the default drivers installed. Here's the Xorg version: $ Xorg -version X.Org X Server 1.7.7 Release Date: 2010-05-04 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.32-5-686 i686 Debian Current Operating System: Linux mannaz 2.6.32-5-686 #1 SMP Fri Dec 10 16:12:40 UTC 2010 i686 Kernel command line: BOOT_IMAGE=/vmlinuz-2.6.32-5-686 root=/dev/mapper/mannaz-root ro quiet splash Build Date: 02 December 2010 01:08:37AM xorg-server 2:1.7.7-10 (Julien Cristau <[email protected]>) Current version of pixman: 0.16.4 and here is synclient -l output: http://pastebin.com/Eqa6hGXP

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• How to access MySQL when I delete the root user on openSUSE 11?

  - by Negin Nicki

  Unfortunately I deleted MySQL users with the command delete from mysql.user and now I can't access MySQL. I tried looking at MySQL - ERROR 1045 - Access denied, but it is not proper for me because I don't have any user for MySQL. I uninstalled and reinstalled MySQL but I can't access MySQL. What should I do? I wanted to have phpMyAdmin without login and I ruined the whole thing. After uninstalling and having no result, I tried to delete the directories of MySQL and again installing them but again no result and now I have this error: Error 2002:can't connect to local mysql server through socket /var/lib/mysql/mysql.sock I don't have any user to reset the password of, but if I have by reinstalling which I don't know how to connect to MySQL. I tried MySQL -u root I tried MySQL I tried mysqld-safe and etc in the link

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• misaligned raid partition in Ubuntu 10.04

  - by Linux Jedi

  I attached two identical hard drives to my linux machine. Then using gparted I formated the first 1024 mb at the beginning of each drive as linux swap space. Then I went into system-administration-disk utility. In there I went to file-create-RAID array. I selected the remaining space in each of the two identical hard drives and created a striped raid array. After the array was created, a warning message appeared. It said "The partition is misaligned by 522240 bytes. This may result in very poor performance. Repartitioning is suggested." What do I do now? As far as I can tell, the partitions are identical.

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• Why did you start with Linux ? And why did you continue using it ?

  - by Stefano Borini

  I'd like to know the reasons that moved you towards Linux. Personally, I started because we had to use a Digital for the Fortran 77 exercises during my first year at the university. Linux was installed on many university computers, and I got interested in it. I always liked to code (on the C64) in basic and assembler, but I knew nothing about other languages. I soon discovered a chat engine called NUTS, and the idea of becoming proficient in C appealed me, so I started hacking the code. To do so, I needed a Unix at home, so I bought a Slackware 3.4 and installed it on my Pentium 166. I then continued using it for many years, reason being that I had pleasure in learning new things and the openness of information about the internals. It was a great learning platform. I then moved to osx because I enjoy the power of Unix with the beauty and efficiency of its interface. I am interested in your answer because I believe that the panorama has changed somehow. Although I still guess to find many "hackers" interested in Linux for the sake of knowledge, I also believe that there are other reasons (work, friends, bought a netbook).

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• How to display password policy information for a user (Ubuntu)?

  - by C.W.Holeman II

  Ubuntu Documentation Ubuntu 9.04 Ubuntu Server Guide Security User Management states that there is a default minimum password length for Ubuntu: By default, Ubuntu requires a minimum password length of 4 characters Is there a command for displaying the current password policies for a user (such as the chage command displays the password expiration information for a specific user)? > sudo chage -l SomeUserName Last password change : May 13, 2010 Password expires : never Password inactive : never Account expires : never Minimum number of days between password change : 0 Maximum number of days between password change : 99999 Number of days of warning before password expires : 7 This is rather than examining various places that control the policy and interpreting them since this process could contain errors. A command that reports the composed policy would be used to check the policy setting steps.

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• 3 Monitor PCI-e Graphics card on Linux (without tremendous pain)?

  - by N Rahl

  As we are all painfully aware, the only way to get multiple monitors AND compositing (Compiz) on Linux is to use a single graphics card that can drive both (or in my case all three) screens. I bought a Radeon 5750 specifically because it claims to able to drive 3 monitors. I can plug in 3 monitors (2 DVI, 1 HDMI) and the Catalyst Control Center shows all 3, but only 2 can be enabled at a time. The exact message is: The current settings cannot be applied. Possible issues may include: - Display(s) cannot be enabled. - Setting(s) cannot be applied due to insufficient video memory. So I'm going to assume that either the 5750 doesn't support 3 monitors, OR, more likely, ATI couldn't be bothered to add that support to their Linux drivers. So this is a multipart question: First, can anyone suggest a PCI Express Graphics card that can run 3 screens on linux without tremendous pain? I'm looking for something where you install the driver and all three screens "just work". Does such a card exist? Second, if you have a 5750, have you been able to get it to do 3 monitors? I'm running Ubuntu 10.04 at the moment.

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• How can I get multiple video cards to work on linux?

  - by user17943

  I installed fedora 12. I have 2 ATI cards that I used to use on windows to run 4 monitors. A recurring problem has been to get them detected in linux. Only my secondary card is picked up linux. When I manage the displays it detects the 2 monitors connected that card. What are the specific steps I should take to get the second card detected? Supposedly there is a tool system-config-xfree. I don't have it, yum can't find it. Also I heard it has something to do with editing some xorg.conf file or something to that effect. I have absolutely no idea how to find the "bus id" of my card, or lookup the horizontal refresh rates, etc.. I would probably have no problem following the documentation & editing the file if I knew a good way to find these values. Someone also suggested installing linux twice and saving the xorg.conf it generates each time (with different card each time) and then merging the two by hand. That is like killing a fly with a hammer though, when I do this again and again in the future It'd be nice to not have to take twice as long. Thanks

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• Linux: 3 Monitor PCI-e Graphics card (without tremendous pain)?

  - by N Rahl

  As we are all painfully aware, the only way to get multiple monitors AND compositing (Compiz) on Linux is to use a single graphics card that can drive both (or in my case all three) screens. I bought a Radeon 5750 specifically because it claims to able to drive 3 monitors. I can plug in 3 monitors (2 DVI, 1 HDMI) and the Catalyst Control Center shows all 3, but only 2 can be enabled at a time. I'll post the exact error message here soon, but it's very useless. So I'm going to assume that either the 5750 doesn't support 3 monitors, OR, more likely, ATI couldn't be bothered to add that support to their Linux drivers. So this is a multipart question: First, can anyone suggest a PCI Express Graphics card that can run 3 screens on linux without tremendous pain? I'm looking for something where you install the driver and all three screens "just work". Does such a card exist? Second, if you have a 5750, have you been able to get it to do 3 monitors? I'm running Ubuntu 10.04 at the moment. Thanks, Nick

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• Why is there an extra HDD under /dev being added in my Linux Kernel?

  - by user1279156

  I have created a Linux kernel and for some reason an extra drive is always added at bootup. My hard drive is listed as /dev/sdb. /dev/sda is created too, and it is 8 MB in size. I can't find anything in the kernel config that is creating this, but if I use a different kernel it is not there. Kernel logs show it as an attached SCSI device, looks just like my hard drive but only 8 MB, and has no partition table. It also doesn't appear to be a physical device. I've tried the kernel on many different models of PCs and it is always there. Does anyone know how to remove it? /dev/disk/by-id gives me: scsi-1AMCC_U21413034D98EB000584 scsi-1AMCC_U21413034D98EB000584-part1 scsi-353333330000007d0 scsi-SATA_ST3250312AS_5VY7SH42 scsi-SATA_WDC_WD800JD-60L_WD-WMAM9Y085675 scsi-SATA_WDC_WD800JD-60L_WD-WMAM9Y085675-part1 scsi-SATA_WDC_WD800JD-60L_WD-WMAM9Y085675-part2 hdparm -i /dev/sda gives me an "invalid argument". dd if=/dev/sda of=sda.img the resulting file does not have any content sdparm results: /dev/sda: Linux scsi_debug 0004 Device identification VPD page: Addressed logical unit: designator type: T10 vendor identification, code set: ASCII vendor id: Linux vendor specific: scsi_debug 2000 designator type: NAA, code set: Binary 0x53333330000007d0 Target port: designator type: Relative target port, code set: Binary transport: Serial Attached SCSI (SAS) Relative target port: 0x1 designator type: NAA, code set: Binary transport: Serial Attached SCSI (SAS) 0x52222220000007ce designator type: Target port group, code set: Binary transport: Serial Attached SCSI (SAS) Target port group: 0x100 Target device that contains addressed lu: designator type: NAA, code set: Binary transport: Serial Attached SCSI (SAS) 0x52222220000007cd designator type: SCSI name string, code set: UTF-8 transport: Serial Attached SCSI (SAS) SCSI name string: naa.52222220000007CD

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• How to switch users without entering password, part II

  - by torbengb

  I've got Ubuntu 9.10 with a user account for my wife, and one for myself. "Wake-from-screensaver" should result in "choose user" without having to enter any password. I know how to do that in Windows, but I'm not good with Linux (yet). Part of this was answered in this question which helped me get past the login screen without passwords (after booting, and after choosing "switch user"), but once the screensaver kicks in and I wake it up again, the system does not present the "choose user" screen. Instead, it either turns off the screensaver and presents the desktop of the most recent user, or (if the screensaver is set to lock the screen) prompt for the user's password (which can be handily surpassed by clicking the "switch user" button and choosing the same user again). So, the login ("choose user") screen has been dealt with. How do I make the (any) screensaver return to the login screen at wake, rather than to the current user's desktop? Windows can do this, I'm sure Linux can too - but how?

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• user input of one php script pass to another php without modification in first php script

  - by ish12

  hi all.. Consider two php scripts(o.php & t.php) o.php contains both html and php. html here gets user input for eg:user name and password this information is passed to php using php-self. I want the user input of o.php passed to t.php without any modification in o.php. I ve used include and require in the t.php but the problem is it displays the output of o.php but i need only the user input values from o.php without displaying the output of o.php. Using functions or session in o.php we can pass user input but am in the situation tat i should not add or modify o.php. thanks in advance!!

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• Seamless Mode Not Working Correctly in Virtual Box

  - by Jeremy

  I run Ubuntu Desktop in a VirtualBox seamless mode, hosted on Windows 7. I recently upgraded from 11.10 to 12.04 and seamless mode no longer works correctly. I have re-installed guest extensions. The problem is that the Ubuntu desktop wallpaper is shown, effectively blocking the Windows desktop. I can bring Windows apps to the foreground, but as soon as I bring any Ubuntu window to the foreground, all the windows apps will disappear, hidden by the ubuntu desktop even if I activated an Ubuntu window in a different monitor. So, it is not very much different from full-screen mode at this time. I suspect if I could turn off the Ubuntu desktop or wallpaper this would be a sufficient workaround (this is basically what Seamless mode is) but that does not seem to be possible within Ubuntu itself. [Jeremy doesn't specify system config, but I can confirm I'm seeing this behavior in Win 7 64-bit with both 32-bit and 64-bit guests. Giovanni sees the same thing on his laptop running Vista Ultimate 64 bit after upgrading his 32-bit guest to 12.04 (forums.virtualbox.org p225407, requires logging in with your free Oracle account). I was using vbox 4.1.14r77440 and matching Guest Additions. I upgraded to 4.1.16-78094 vbox+additions. Still a problem. And I filed launchpad bug 999929 to see if I can get feedback from developers. – tbc0] Any other ideas?

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• Read-only filesystem Recovery Mode not working

  - by purbleguy

  I have seen other posts of this before, but they didn't help. In short, today I was trying to play Colobot on my Ubuntu Trusty computer, when I tried to access the directory the game was in by terminal, bash warned me that the disk was in a read-only state. I'm like, ok... So I reboot and go into recovery mode, there I do fsck, it finds errors, but apparently fails to fix them. At that point I was getting annoyed and searched the internet, once I found an answer I ran the grub and dpkg options in recovery mode, recovery mode said it was read/write, but when I boot in, I get the same thing, read-only. So I reboot into recovery mode, and tada! It's read-only again. I can't think of anything else to do, as the other people who had the same problems had them fixed by the steps I did. I got all my important files backed up to both a seperate partition and a seperate computer, so no worries there. I just need help getting this to work, as my computer might as well be a brick if I cant do f/a on it

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• How to free up space on /boot? [closed]

  - by Phrogz

  Possible Duplicate: Free up more space on /boot I logged onto my server today to find the message: => /boot is using 98.9% of 91MB When I look at /boot I see that it is indeed very low on space, and has old-kernel files in it: phrogz@planar:~$ df -h /boot Filesystem Size Used Avail Use% Mounted on /dev/sda1 92M 54M 33M 63% /boot phrogz@planar:~$ la /boot total 81880 drwxr-xr-x 4 root root 3072 2011-12-02 06:26 ./ drwxr-xr-x 22 root root 4096 2011-09-29 06:37 ../ -rw-r--r-- 1 root root 646419 2011-03-01 19:02 abi-2.6.32-30-server -rw-r--r-- 1 root root 646419 2011-04-08 17:07 abi-2.6.32-31-server -rw-r--r-- 1 root root 646454 2011-04-20 16:53 abi-2.6.32-32-server -rw-r--r-- 1 root root 646454 2011-07-29 16:07 abi-2.6.32-33-server -rw-r--r-- 1 root root 646710 2011-09-13 18:00 abi-2.6.32-34-server -rw-r--r-- 1 root root 646820 2011-10-11 11:10 abi-2.6.32-35-server -rw-r--r-- 1 root root 110687 2011-03-01 19:02 config-2.6.32-30-server -rw-r--r-- 1 root root 110676 2011-04-08 17:07 config-2.6.32-31-server -rw-r--r-- 1 root root 110687 2011-04-20 16:53 config-2.6.32-32-server -rw-r--r-- 1 root root 110687 2011-07-29 16:07 config-2.6.32-33-server -rw-r--r-- 1 root root 110687 2011-09-13 18:00 config-2.6.32-34-server -rw-r--r-- 1 root root 110687 2011-10-11 11:10 config-2.6.32-35-server drwxr-xr-x 3 root root 6144 2011-12-02 06:26 grub/ -rw-r--r-- 1 root root 8258196 2011-05-18 11:58 initrd.img-2.6.32-30-server -rw-r--r-- 1 root root 8259568 2011-05-23 20:24 initrd.img-2.6.32-31-server -rw-r--r-- 1 root root 8257374 2011-05-30 07:47 initrd.img-2.6.32-32-server -rw-r--r-- 1 root root 8287489 2011-08-10 06:37 initrd.img-2.6.32-33-server -rw-r--r-- 1 root root 8288075 2011-09-29 06:37 initrd.img-2.6.32-34-server drwx------ 2 root root 12288 2011-05-18 11:46 lost+found/ -rw-r--r-- 1 root root 160280 2010-03-23 03:40 memtest86+.bin -rw-r--r-- 1 root root 2179117 2011-03-01 19:02 System.map-2.6.32-30-server -rw-r--r-- 1 root root 2179628 2011-04-08 17:07 System.map-2.6.32-31-server -rw-r--r-- 1 root root 2178240 2011-04-20 16:53 System.map-2.6.32-32-server -rw-r--r-- 1 root root 2178382 2011-07-29 16:07 System.map-2.6.32-33-server -rw-r--r-- 1 root root 2178952 2011-09-13 18:00 System.map-2.6.32-34-server -rw-r--r-- 1 root root 2179333 2011-10-11 11:10 System.map-2.6.32-35-server -rw-r--r-- 1 root root 1336 2011-03-01 19:08 vmcoreinfo-2.6.32-30-server -rw-r--r-- 1 root root 1336 2011-04-08 17:13 vmcoreinfo-2.6.32-31-server -rw-r--r-- 1 root root 1336 2011-04-20 16:54 vmcoreinfo-2.6.32-32-server -rw-r--r-- 1 root root 1336 2011-07-29 16:08 vmcoreinfo-2.6.32-33-server -rw-r--r-- 1 root root 1336 2011-09-13 18:03 vmcoreinfo-2.6.32-34-server -rw-r--r-- 1 root root 1336 2011-10-11 11:11 vmcoreinfo-2.6.32-35-server -rw-r--r-- 1 root root 4111552 2011-03-01 19:02 vmlinuz-2.6.32-30-server -rw-r--r-- 1 root root 4113344 2011-04-08 17:07 vmlinuz-2.6.32-31-server -rw-r--r-- 1 root root 4106528 2011-04-20 16:53 vmlinuz-2.6.32-32-server -rw-r--r-- 1 root root 4107648 2011-07-29 16:07 vmlinuz-2.6.32-33-server -rw-r--r-- 1 root root 4108960 2011-09-13 18:00 vmlinuz-2.6.32-34-server -rw-r--r-- 1 root root 4111040 2011-10-11 11:10 vmlinuz-2.6.32-35-server I was able to find the old kernel packages like so: phrogz@planar:/boot$ dpkg -l | grep linux-image ii linux-image-2.6.32-30-server 2.6.32-30.59 Linux kernel image for version 2.6.32 on x86 ii linux-image-2.6.32-31-server 2.6.32-31.61 Linux kernel image for version 2.6.32 on x86 ii linux-image-2.6.32-32-server 2.6.32-32.62 Linux kernel image for version 2.6.32 on x86 ii linux-image-2.6.32-33-server 2.6.32-33.72 Linux kernel image for version 2.6.32 on x86 ii linux-image-2.6.32-34-server 2.6.32-34.77 Linux kernel image for version 2.6.32 on x86 iF linux-image-2.6.32-35-server 2.6.32-35.78 Linux kernel image for version 2.6.32 on x86 iU linux-image-server 2.6.32.36.42 Linux kernel image on Server Equipment. …and I can see that many of them are older than my current image: phrogz@planar:/boot$ uname -a Linux planar 2.6.32-34-server #77-Ubuntu SMP Tue Sep 13 20:54:38 UTC 2011 x86_64 GNU/Linux However, I can't actually remove them due to an unmet dependency: phrogz@planar:/boot$ sudo apt-get --purge remove linux-image-2.6.32-30-server Reading package lists... Done Building dependency tree Reading state information... Done You might want to run `apt-get -f install' to correct these: The following packages have unmet dependencies: linux-image-server: Depends: linux-image-2.6.32-36-server but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). But I can't fix the dependency (presumably due to low disk space): phrogz@planar:/boot$ sudo apt-get -f install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages were automatically installed and are no longer required: liblcms1 linux-headers-2.6.32-32-server libnspr4-0d linux-headers-2.6.32-33-server linux-headers-2.6.32-32 linux-headers-2.6.32-33 linux-headers-2.6.32-34 libcups2 tzdata-java libjpeg62 linux-headers-2.6.32-34-server libavahi-client3 ca-certificates-java libnss3-1d Use 'apt-get autoremove' to remove them. The following extra packages will be installed: linux-image-2.6.32-36-server Suggested packages: fdutils linux-doc-2.6.32 linux-source-2.6.32 linux-tools The following NEW packages will be installed: linux-image-2.6.32-36-server 0 upgraded, 1 newly installed, 0 to remove and 8 not upgraded. 3 not fully installed or removed. Need to get 0B/31.8MB of archives. After this operation, 128MB of additional disk space will be used. Do you want to continue [Y/n]? (Reading database ... 145200 files and directories currently installed.) Unpacking linux-image-2.6.32-36-server (from .../linux-image-2.6.32-36-server_2.6.32-36.79_amd64.deb) ... Done. dpkg: error processing /var/cache/apt/archives/linux-image-2.6.32-36-server_2.6.32-36.79_amd64.deb (--unpack): failed in buffer_write(fd) (10, ret=-1): backend dpkg-deb during `./boot/vmlinuz-2.6.32-36-server': No space left on device dpkg-deb: subprocess paste killed by signal (Broken pipe) Running postrm hook script /usr/sbin/update-grub. Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.32-35-server Found linux image: /boot/vmlinuz-2.6.32-34-server Found initrd image: /boot/initrd.img-2.6.32-34-server Found linux image: /boot/vmlinuz-2.6.32-33-server Found initrd image: /boot/initrd.img-2.6.32-33-server Found linux image: /boot/vmlinuz-2.6.32-32-server Found initrd image: /boot/initrd.img-2.6.32-32-server Found linux image: /boot/vmlinuz-2.6.32-31-server Found initrd image: /boot/initrd.img-2.6.32-31-server Found linux image: /boot/vmlinuz-2.6.32-30-server Found initrd image: /boot/initrd.img-2.6.32-30-server Found memtest86+ image: /memtest86+.bin done Errors were encountered while processing: /var/cache/apt/archives/linux-image-2.6.32-36-server_2.6.32-36.79_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) How do I free up space on /boot so that I can fix my dependencies? Should I just delete the files manually? And then, should I resize my /boot to be larger, so this doesn't happen again? If so, how? If not, what maintenance should I be running regularly to prevent the accumulation of this cruft?

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• How do I choose a package format for Linux software distribution?

  - by Ian C.

  We have a Java-based application that, to date, we've been distributing as a tarball with instructions for deploying. It's mostly self-contained so deployment is fairly straight-forward: Untar on the disk you'd like it to live on; Make sure Java is in your path and a suitable distro and version; Verify ownership and group on all the files Start up the server processes with our start script If the user wants to get in to start-on-boot stuff with SysV we have some written instructions and a template init file for it in our tarball. We'd like to make this installation process a little more seamless; take care of the permissions and the init script deployment. We're also going to start bundling our own JRE with the application so that we're mostly free of external dependencies. The question we're faced with now is: how do we pick a package format for distribution? Is RPM the standard? Can all package management tools deal with it now? Our clients primarily run RHEL and CentOS, but we do have some using SuSE and even Debian. If we can pick a distro-agnostic format we'd prefer that. What about a self-extracting shell script? Something akin to how Java is distributed. If we're dependency-free would the self-extracting script be sufficient? What features or conveniences would we lose out on going with the script versus a proper package format meant for use by a package manager?

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• How to keep the session of user login?

  - by YaW

  Hi, I have an app that requires user to register. I've got the app conected to PHP in my server to do the logic of register/login and so, this is not problem at all. But, I want to keep a session of the user in local, so the user doesn't have to login again every time he runs the app. So, I want something like this: First time user, he opens the app, register and login. Do some stuff with the app and closes it. Open the app again, the user is recognized so he doesn't need to login again. I only need to store an ID and a Username (both fetched from the DB in the login php method). What's the best way to do this?? I've thought about doing a custom preference, store the data in files or even a local DB (sqlite). Any suggestions?

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• Ubuntu 11.10 not starting in Graphical mode?

  - by iammilind

  I am in deep trouble. I am using Ubuntu 11.10 in dual boot mode with XP. Originally my touch pad was not working, (sometimes). To fix that, I installed something. After reboot my Ubuntu is not booting up!! I have several software pkgs already installed in past several weeks so reinstall of OS is my last resort. Can someone help me to get it rebooted in graphical mode? I had followed the procedure mentioned in this thread as well. With that link, somehow I am able to restart in text mode. But no luck after that. I am not being able to go back on graphical mode. The important outputs of lspci are following: 00.00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c) 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 0c) 00:02.0 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 0c) I am attaching few snapshots, for more details on hardware.

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• Should I use a separate 'admin' user as my "root sudo" or grant sudo to my 'app' user?

  - by AJB

  I'm still wrapping my brain around the Ubuntu 'nullify root' user management philosophy (and Linux in general) and I'm wondering if I should 'replace' my root user with a user called 'admin' (which basically has all the powers of the root, when using sudo) and create another user called 'app' that will be the primary user for my app. Here's the context: I'll be running a LNMP stack on Ubuntu 12.04 Server LTS. There will be only one app running on the server. The 'app' user needs to have SUPER privileges for MySQL. PHP will need to be able to exec() shell commands. The 'app' user will need to be able to transfer files via SFTP. And I'm thinking this would be the best approach: nullify 'root' user create a user called 'admin' that will be a full sudoer of root, this will be the new "root" user of NGINX, PHP, and MySQL (and all system software) grant SUPER privileges to 'app' in MySQL Grant SFTP privileges to only the 'app' user. As I'm new to this, and the information I've found in researching it tends to be of a more general nature, I'm wondering if this is a solid approach, or if it's unorthodox in a way that would cause issues down the road. Thanks in advance for any help.

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• Collaborative kernel development

  - by Raffo

  Hi, I have to develop a patch for the linux kernel (2.6) for an university course I'm attending. I have to develop this patch with a friend of mine and we need to edit the same files on our computers (2-3 PCs). So, we want to use something like a collaborative editor and/or a version control system. The problem is that we never used something like that and that we cannot release our software as open source till we take the exam. Obviously, we're using linux. I'm here to ask you suggestions in order to manage our work in the best way. Thank you

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• Oracle??????!Oracle Linux 5.6/6??????????

  - by Yusuke.Yamamoto

  ?????????????Oracle Linux 5.6 ?? Oracle Linux 6 ??????????? ????????????????????(????·???????????????????)? Oracle Linux 6 DVDs Now Available(??) Oracle Linux 5.6 DVDs Now Available(??) ????????????????????·????? Unbreakable Enterprise Kernel(UEK) ???????(Red Hat ?????????????)? UEK ??????????????????????????·???????????????????? Oracle Exadata/Exalogic ???UEK ?????????? Oracle on Linux ???????????????????? ???? ?????? Oracle Linux Unbreakable Enterprise Kernel???? - nkjmkzk.net OCFS2 1.6???? - nkjmkzk.net [??]?????????????Fusion Applications??????Linux Kernel??Oracle OpenWorld 2010 - Publickey

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