/ - rtt - IT Resource

  • systemd management using systemctl and journalctl to check systemd logs


    systemd is like the service manager for your Centos and other modern Linux distributions (including Debian/Mint/Ubuntu) allows you to enable services, stop them, restart them, check their status and even reboot your system. The key commands or arguments you will use with systemctl are the following: Unit Commands:   list-units [PATTERN...]         List loaded units &nbs........
  • css how to format code in the code tag


    code {     background: #f4f4f4;     border: 1px solid #ddd;     border-left: 3px solid #f36d33;     color: #666;     page-break-inside: avoid;     font-family: monospace;     font-size: 15px;     line-height: 1.6;     margin-bottom: 1.6em;     max-width: 100%; &nb........
  • How to download gajim 0.16.9 XMPP/Jabber client so you can use OMEMO encryption


    #Linux Mint 18.2 how to install gajim .16.9 so you can use OMEMO encryption: sudo apt-get install python-axolotl python-nbxmpp wget https://gajim.org/downloads/0.16/gajim-0.16.9.tar.gz tar -zxvf gajim-0.16.9.tar.gz cd gajim-0.16.9 ./autogen.sh ;make;sudo make install #if you get this error you need to get a newer python-nbxmpp from here: gajim Gajim needs python-nbxmpp >= 0.6.1 to run. Quiting...........
  • hwloc-nox set CPU affinity in Linux


    sudo apt-get install  hwloc-nox Reading package lists... Done Building dependency tree       Reading state information... Done The following NEW packages will be installed:   hwloc-nox 0 upgraded, 1 newly installed, 0 to remove and 530 not upgraded. Need to get 151 kB of archives. After this operation, 453 kB of additional disk space will be used. Get:1 http://archive.ubuntu.com/ubunt........
  • gvfs mount in /run/user cannot be accessed or displayed wrong permissions


    The folder contents could not be displayed Backend currently unmounting drwx------ 10 userhere group  260 Aug 23 19:40 .. ??????????  ? ?   ?      ?            ? sftp:host=192.168.8.80,user=adhoc ls: cannot access 'sftp:host=192.168.8.80,user=adoc': Input/output error $ ps aux|grep fuse one       253........
  • Debian/Ubuntu/Mint Linux How To Set VLAN in /etc/network/interfaces


    You can find many ways to specify the VLAN in your network configuration but I find this is the simplest and quickest. In this case we are talking about a bridged adapter "vmbr0" but it works even if you just had a normal non-bridged interface. The key here is that in vmbr0 you'll notice there is no IP address.  We just specify "manual". Below it is a similar stanza for "vmbr0.58" in this case 58 represents the VLAN (change........
  • VMWare ESXi 6.7 SSH/PowerShell CLI Commands


    [root@localhost:~] BootModuleConfig.sh          echo                         host-ind                     nfcd                   ........
  • VMWare Vsphere VCSA Graphical Install Creates json


    yes it does create its own json ============================================ cat /tmp/vcsaUiInstaller/ovftool-20180809-175238948-20180809-175603497.log |grep -i json 2018-08-09T17:56:04.238-07:00 verbose OVFTool[30966] [Originator@6876 sub=Default] Manifest file entry: SHA1(VMware-vCenter-Server-Appliance-6.7.0.12000-8832884_OVF10-file1.json) = 1deb658c724767697587d5909c4051c01813e6a1 -->     <ovf:File ovf:href="VMware-vCenter-Server-........
  • Debian Mint Ubuntu compiling xmr-stak


    sudo apt-get install libcurl4-openssl-dev git build-essential autotools-dev autoconf libcurl3 sudo apt-get install libcurl4-gnutls-dev git clone https://github.com/wolf9466/cpuminer-multi sudo apt-get install cmake  libpthread-* libmicrohttpd-dev libssl-dev libhwloc-dev git clone https://github.com/fireice-uk/xmr-stak-cpu.git make install cd bin chmod +x xmr-stak-cpu ./xmr-stak -O xmr........
  • *** These critical programs are missing or too old: gawk


    checking whether autoconf works... ../configure: line 5377:  7325 Segmentation fault      $AUTOCONF $ACFLAGS configure.in > /dev/null 2>&1 no configure: error: *** These critical programs are missing or too old: gawk *** Check the INSTALL file for required versions.  ........
  • linux mint image convert menu option missing solution


    I already have the caja-image-converter option installed but it shows nothing. Weirdly enough if you install nemo and nautilus converter it does show and work inside caja: The solution is to install *-image-converter sudo apt-get install *-image-converter Reading package lists... Done Building dependency tree       Reading state information... Done Note, selecting 'n........
  • How to qemu-kvm enable bridged networking in Debian Ubuntu Linux Mint on KVM containers


    I've read a few guides about this but they didn't work for me. sudo apt-get install bridge-utils #don't think the above is enough it won't work still even though you have by default an /etc/qemu-ifup that handles it if you have the right tools and setup sudo qemu-system-x86_64 -net tap -net nic -enable-kvm -cpu host,vmx=on ~/VirtualBox VMs/vsphere-vcenter/vsphere-vcenter.vdi W: /etc/qemu-ifup: no bridge for guest interface foun........
  • VMWare 6.7 VCSA VSphere ESXi Management SSO Install Guide on Linux using the CLI


    #mount the VCSA DVD mount /dev/sr0 /mnt/cd #alternatively you could mount the iso directly mount -o loop vcsa.iso /your/mount/path #for this purpose we are using the CLI installer on Linux cd /mnt/cd/vcsa-cli-installer/lin64 #no it's not going to be that easy you can't just run vcsa-deploy like that you need to use a template or configured .json file ./vcsa-deploy Usage: vcsa-deploy [-h] [--version] [--supported-deploymen........
  • Linux Mint Black Screen after boot no graphics solution


    This is not the normal "black screen" issue and I was shocked to eventually find out why.  The normal advice of reconfiguring Xorg didn't work.  Even booting into "Recovery Mode" did not help. Here is the short end of the stick that fixed it: sudo apt-get install mdm mate-desktop-environment Yes you got it right, mdm and the mate-desktop-environment / gnome were somehow uninstalled.  This must be whe........
  • Mozilla Firefox Address Bar History Not Working places.sqlite corruption solution database repair


    Here is the only solution I found that works in Firefox: *Note you could basically just copy all of the commands in bold (the rest just shows the output)   Install sqlite3 sqlite3 places.sqlite sqlite> .clone places.sqlite-fixed moz_places... done moz_historyvisits... done moz_inputhistory..........
  • Linux Mint Ubuntu Debian How To Disable Webcam Automatically Onboot To Prevent Spying and Privacy Violations


    It is well known hackers, the NSA, CIA and other groups have created malware to secretly turn on your webcam and microphone on your phone, tv etc.. But fortunately on our computers and laptops we have some options. Most webcams use the "uvcvideo" kernel module / driver.  You can disable this in two ways on boot. I recommend both just as a failsafe.  Disable it on rc.local once your system boots automatically Add the followi........
  • How To Install Windows Server 7 8 10 12 2008 2012 2014 2016 Servers Desktops using Linux tftp, dhcpd and samba


    It has been a big pain for a long-time to install Windows from a Linux environment.  I used to run a windows install server and it never worked right for some reason (the install would fail on most servers). Before getting start be sure to setup your samba share so once you boot into WinPE you can mount the install for whatever Windows you want /etc/samba/smb.conf [smbwinstall] path = /tftpboot/images/winstall guest ok = yes........
  • Centos 7 Password Reset


    In Centos 7 the days of editing the "kernel" line and adding "single" are gone.  On top of that sometimes after a new install passwords do not work (possibly because requirements were not met but the installer never mentioned this?). 1.) On bootup edit the bootline by entering GRUB. Type e Find the line that says "linux16 /vmlinuz" Edit the part that says "ro" and change with &q........
  • bash find line and replace howto


    First find the line number: awk '/what you are searching for/{ print NR; exit }' input-file 86 Now use sed to replace it: sed -i  86s/.*/"your replacement text"/ $file   Here is a full sample script to automate it: file=some/f........
  • Install Windows From a Linux TFTP Server instead of using WDS Solution


    yum -y install samba vi /etc/samba/smb.conf https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-6.03.zip mkdir syslinux;cd syslinux;unzip syslinux-6.03.zip mkdir -p /tftpboot/libs/ cp bios/com32/modules/linux.c32 /tftpboot/libs/ cp bios/com32/libutil/libutil.c32 /tftpboot/libs/ cp bios/com32/lib/libcom32.c32 /tftpboot/libs/ #add lib path echo "PATH libs" >> /tftpboot/pxeli........
  • css responsive images


    add this style="background-size: contain;max-width: 100%; height: auto;" to your img code. Example: <img style='background-size: contain;max-width: 100%; height: auto;' sr........
  • responsive table without changing much code solution


    So you've got a responsive site with tables but it breaks them so anything not viewable on the screen is now cut off. Here is a simple solution that will allow users to scroll horizontally so they can see the whole table: <div style="overflow-x:auto;">   <table>      <tr>          <td></td>    &........
  • How to find and mount mdadm arrays automatically


    A great way if you have a bunch of drives and mdadm connected and are looking for backups/archives and don't know what is where!    for md in `cat /proc/mdstat|grep md[0-99]|awk '{print $1}'`; do mkdir /mnt/$md; mount /dev/$md /mnt/$md; done........
  • linux cp and mv will not overwrite due to alias!


    This through me for a loop when I would do a cp -rf or mv -f nothing would get overwritten even if piping y or yes to the command. Type alias and you'll see why: alias cp='cp -i' alias l.='ls -d .* --color=auto' alias ll='ls -l --color=auto' alias ls='ls --color=auto' alias mv='mv -i' alias rm='rm -i' The -i is a safeguard against messing things up but however does mess things up worse when you know what........
  • FreeBSD/OpenBSD OpenVPN Client error "Cannot allocate TUN/TAP dev dynamically"


    I have never had this error on Linux and this is running FreeBSD as root: Wed Aug  9 04:29:34 2017 us=329050 Cannot allocate TUN/TAP dev dynamically Wed Aug  9 04:29:34 2017 us=329832 Exiting due to fatal error The Solution you need a kernel module that is for some reason not automatically loaded like Linux: kldload if_tap........
  • Cannot allocate TUN/TAP dev dynamically - FreeBSD/OpenBSD OpenVPN Client error Solution


    I have never had this error on Linux and this is running FreeBSD as root: Wed Aug  9 04:29:34 2017 us=329050 Cannot allocate TUN/TAP dev dynamically Wed Aug  9 04:29:34 2017 us=329832 Exiting due to fatal error The Solution You need a kernel module that is for some reason not automatically loaded like Linux: kldload if_tap........
  • Wine uninstalled broken on Linux Mint


    Solution: Aptitude is very smart and fixed the issues it was because of nvidia cuda and opencl and nothing else suggested or hinted this using apt sudo aptitude install wine The following NEW packages will be installed:   ocl-icd-libopencl1{ab} ocl-icd-libopencl1:i386{ab} wine wine1.6   wine1.6-amd64{a} wine1.6-i386:i386{a} The following packages will be REMOVED:........
  • ffmpeg trouble concatenating similar but different files


    When things go wrong your video is basically unplayable or the first video plays fine and then freezes when moving on to the next.  Generally if both videos weren't produced with the exact 100% same settings you will have issues.  You can try the basic concat but it often won't work right. Solution for me: My example uses 3 videos in total so "n=3"  and a=1 to include audio. ffmpeg -threads 12  -i file1.mp4 -........
  • Linux Mint USB Kernel Tainted and Locked Port/Dev File


    Essentially a program I was running for mining did not terminate properly with Ctrl+C it is listed as defunct and cannot be killed, kernel is tainted and normal tricks to disable the port are impossible the dev and sys entries for the device cannot be browsed or interacted with in any form without a lockup of the request.  The only solution is to reboot due to the kernel taint as far as I can find so far.   [1130246.811056] INFO: task minerd:21861 blocked for more th........
  • ffmpeg Linux Mint download, compile and install howto


    #if you have nvidia make sure you install the nvidia-cuda-toolkit so hardware acceleration can be used wget http://ffmpeg.org/releases/ffmpeg-3.3.2.tar.bz2 tar -jxvf ffmpeg-3.3.2.tar.bz2 cd  ffmpeg-3.3.2/ ./configure --disable-yasm install prefix            /usr/local source path              ........
  • USB 3.0 External HDD Enclosure Seagate UAS problems - [sdd] tag#1 CDB: Write(16) 8a 00 00 00 00 01 70 04 08 68 00 00 00 08 00 00


      This is a 8TB Seagate external USB 3.0 device apparently newer kernels use a module called "UAS" instead of "USB Storage" which causes issues as a lot of devices are not properly supported in UAS mode by the kernel driver.  The solution some say is to disable UAS specifically for your USB device but I'd rather just disable UAS altogether.   Solution blacklist UAS: *do not do this it does not work and just causes your USB 3.0........
  • Centos 7 Cudaminer Nvidia setup guide


    I am using a GTX 1060 but replace the download for the driver with the correct/current version for your particular card by visiting: http://www.nvidia.com/Download/index.aspx?lang=en-us   yum install automake curl openssl-devel libcurl-devel gcc gcc-c++ yum -y install kernel-devel-`uname -r` yum -y install unzip #the........
  • Nvidia Linux Mint/Ubuntu screentearing horizontal line solution


    Finally after ages I found the solution which is on many pages on the net but not obvious and should have been standard or more common info! Instant Solution: Type this into the terminal (unfortunately the driver config menu doesn't have the option as itis hidden): nvidia-settings --assign CurrentMetaMode="nvidia-auto-select +0+0 { ForceCompositionPipeline = On }" Make permanent   Cli........
  • Openshot 2.2 is very unstable always crashing in Linux Mint 18.1!


    Jun  1 15:45:42 videoeditor-desktop org.mate.panel.applet.MintMenuAppletFactory[1882]: project_data:INFO Missing folder chosen by user: Jun  1 15:45:42 videoeditor-desktop org.mate.panel.applet.MintMenuAppletFactory[1882]: project_data:INFO Removed missing file: MAH02949.MP4 Jun  1 15:45:57 videoeditor-desktop org.mate.panel.applet.MintMenuAppletFactory[1882]:      ui_util:WARNING Icon theme media-playback-start not found. Will use backup........
  • Text Editors - Top Linux Ubuntu/Debian/Mint Options


    1.) gedit/pluma both very good the only thing I wish is that there was an autosave for unsaved documents!  The only other competitor which is similar but I prefer less is kwrite (although I think kwrite may have proper autosave) pluma seems to be a renamed gedit yet gedit is still installable on Linux Mint)  ........
  • Avocent DSR8020 KVM/IP - Network Connect Error - Solution


    This error is commonly due to Java security or TLS settings but there is a second issue with forwarded ports that also causes it.   1. Java Security/TLS Settings issue: This article has the solution to change them all in Linux automatically 2. Port Forwarding Issue if your Avocent DSR is behind NAT/private IP........
  • How to verify SSL SHA-1 Certificate Fingerprnit Signature of your mail/web server to avoid hijacking/man-in-the-middle attacks


    This is especially helpful if you run your own servers.  If you are presented with an error message or warning that the signature has changed or does not match the IP/domain you are connecting to you always want to verify manually. So your e-mail/web client will show you an SHA-1 fingerprint like this: "Could not verify this certificate because the issuer is unkown" or other reasons such as a mismatch in IP/domain. It will also show you........
  • Migrating from Linux Mint 17.2 mdadm RAID array to a new one (because I upgraded to larger drives).


    1.) Replicate the number of partitions in your new drives. gdisk /dev/sda gdisk /dev/sdb I created 3 partitions of the same same size. partition #1: +1G (/boot) partition #2: +60G (swap) partition #3: rest of it (/) #note if you are using GPT/gdisk you need to create separate a partition at least 1MB in size (in my case I would a 4th partition and mark it type ef02).........
  • Linux how to reformat html file code solution


    The solution is simply "tidy"/Tidy-HTML.  It will take your poorly formatted HTML code (and I mean files that span just a few lines that are unreadable) and fix it up. Note the command below does everything in place.  *Make sure you take a backup of all .html files* It also seems to break html5 code/templates so beware. tidy -im yourfile.html An automated way in bash:........
  • mdadm and lvm how to completely disable and remove vg/pv/lv


    In short the solution is just to use vgremove for the actual /dev/mapper device: vgremove /dev/mapper/backups-backuplv   box mnt # mdadm --manage /dev/md8 --stop mdadm: Cannot get exclusive access to /dev/md8:Perhaps a running process, mounted filesystem or active volume group? box mnt # lv lvchange     lvconvert    lvcreate     l........
  • ImageMagick how to trim white space automatically in Linux


    convert -trim yourimage.png That's all there is to it, very simple, clean and quick!........
  • mdadm change wrong device name md127 fix and solution in Linux


    md127 issue, it should be /dev/md3 per mdadm.conf Any time something is mounted as md127 it almost always means there is no entry for this mdadm array in the mdadm.conf in initramfs (which is separate from your actual /etc/mdadm.conf). cat /etc/mdadm.conf ARRAY /dev/md3 metadata=1.2 UUID=b6722845:381cc94e:7a2c5b5f:8e3b7c4f The reason for this is something strange, most Linux OS's bizarrely always keep their own copy of /etc/mdadm.con........
  • Linux Mint 17 How to Enable File Sharing Option in File Manager


    I still cannot understand how this would not be enabled by default and I struggled to find the reason why with manually installing samba etc.. wondering why the option for sharing was not in the menu.   On Linux Mint "MATE" the package is called "caja-share" and on Cinnamon it is called "nemo-share" so edit the below command as necessary: *Also note that the "samba" package is necessary as it is not inst........
  • blocked for more than 120 seconds issues with iowait and timeout on Live Linux distribution while writing to physical disk


    This happened while an mdadm array was syncing, all access from writing a new blank file to opening a small .txt file was very slow:   [222117.312078] kjournald starting.  Commit interval 5 seconds [222117.685060] EXT3-fs (md0): using internal journal [222117.685096] EXT3-fs (md0): mounted filesystem with ordered data mode [222122.376847] kjournald starting.  Commit interval 5 seconds [222122.602825] EXT3-fs (md2): using internal jour........
  • openvpn 2.3.10-1.el6 issues auth-env does not work correctly for auth-user-pass-verify


    openvpn 2.3.10-1.el6 issues   in the .conf auth-user-pass-verify "passwordcheck $username $password $untrusted_ip"  via-env auth-env does not work correctly in OpenVPN 2.3: Sat Apr 23 02:30:22 2016 - $username - $untrusted_ip - login failure But OpenVPN 2.2 does work as expected. It could be that the specified script automatically receive........
  • Linux Mint/Ubuntu/Debian Window Controls Missing Solution


    If Linux Mint 17 or other has no window buttons/controls you can do the following from terminal: marco --replace& Sometimes it can be fixed if you go to your themes/appearance and choose a new one but in the case like mine where Compiz is installed but not running/working then that fix will not work and will require the marco command above. What if you can't type in a terminal Window? If you close........
  • Is this partition table correct starting and ending partition on same cylinder?


       Device Boot      Start         End      Blocks   Id  System /dev/sdc1               1         132     1060256+  fd  Linux raid autodetect Partition 1 does not end on cylinder boundary. Partition 1 does not start........
  • Centos 6 how to guide convert LVM non-RAID into mdadm 1/10 RAID array live without reinstalling


    Here is the scenario you or a client have a remote machine that was installed as a standard/default minimal Centos 6.x machine on a single disk with LVM for whatever reason.  Often many people do not know how to install it to a RAID array so it is common to have this problem and why reinstall if you don't need to?  In some cases on a remote system you can't easily reinstall without physical or KVM access. So in this case you add a second physical or disk or already ha........
  • Installing zoneminder on Ubuntu/Debian Linux Howto


    sudo apt-get install zoneminder [sudo] password for one: Reading package lists... Done Building dependency tree       Reading state information... Done The following packages were automatically installed and are no longer required:   libuser-perl python-evince kdebase-apps kwrite unixodbc   libgnomeprint2.2-data python-soappy vgabios python-metacity hddtemp   python-mediaprof........
  • Centos/obfsproxy errors


    I never did get it working, it is too bad as obfsproxy should really be an option and integrated into the OpenVPN client and server or something similar:   yum -y install python-pip python-devel No package python-pip available. #install the EPEL repo python-pip install obfsproxy python-pip install obfsproxy -bash: python-pip: command not found pip install obfsproxy    &........
  • HP Procurve Switch 2824 CLI Telnet Experience , Guide and Tutorial


    telnet 192.168.1.54 ------------------------------------- ProCurve J4903A Switch 2824 Software revision I.10.77 Copyright (C) 1991-2009 Hewlett-Packard Co.  All Rights Reserved.                            RESTRICTED RIGHTS LEGEND  Use, duplication, or disclosure by the Government is subject........
  • Linux check NIC ethernet port network card speed


    ethtool eth0 Settings for eth0:     Supported ports: [ TP MII ]     Supported link modes:   10baseT/Half 10baseT/Full                             100baseT/Half 100baseT/Full                   ........
  • cPanel how to force reinstall rpms and fix packages and other problems caused by updates or duplicate rpms


    <p>If a service is not working and resetting it to defaults is not working and you get bizarre error messages it is probably a broken update and possibly duplicate package.</p> <p>Take in this case &quot;exim&quot; not working even after resetting to defaults.</p> <p><strong>Check for duplicates:</strong><code><br /> </code></p> <p><code>rpm -aq|grep exim<br /> </code></p> <p><c........
  • Cannot mount iPhone or iPad in Linux


    Unable to mount iPad 4 Unhandled Lockdown error (-4) This is because you need the libimobiledevice-utils package installed and a newer version of it. My older Ubuntu 10.10 uses a version that does not have "idevicepair" which seems to work perfectly and automatically with newer versions of the library. Basically if you install the above library it should be plug and play and if your imobiledevice-utils doesn't have 'idevice........
  • PayPal subscriptions automatically cancelling after creation of profile


    <p>There is a weird quirk with how this works, but there is a variable called &quot;src&quot; that defaults to 0 or disabled if not specified as 1.</p> <p>The default 0 means not to recur billing on a subscription.&nbsp; It's too bad it's not more obvious anywhere nor is there an explanation or warning during payment or after to both the seller and buyer.</p> <p><strong>Here's a proper subscription code example that does recur and does not cancel........
  • CPanel Link to all of the command line options


    <p>CPanel says you can access 98% of the functions through CLI which experienced Unix/Linux admins prefer for simplicity and for scripting.&nbsp; I've never found CPanel easy to use from the admin panel, it seems everything is hard to find and a simple task becomes a series of hunts.</p> <p>So for people like me here's the list: <a href="http://cpanel.net/system-administrators/command-line-scripts/">http://cpanel.net/system-administrators/command-line-scrip........
  • drbd won't sync 8.3.13 on OpenVZ kernel


    <p>I used the matching 8.3.13 utilities and it didn't work but strangely the newer 8.3.16 which makes DRBD complain works just fine.</p> <p>GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by root@sighted, 2012-10-09 12:47:51<br /> &nbsp;0: cs:SyncSource ro:Secondary/Primary ds:UpToDate/Inconsistent A r-----<br /> &nbsp;&nbsp;&nbsp; ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:5236960<br /> &nbsp;&nbsp;&am........
  • LVM Tutorial how to create a Physical Volume (PV), Volume Group (vg), and a Logical Volume (LV) within it


    # first we need a physical volume which we use the pvcreate tool to create # I create mine on /dev/sdb3 pvcreate /dev/sdb3   dev_is_mpath: failed to get device for 8:19   Physical volume "/dev/sdb3" successfully created # pvdisplay shows the newly created volume pvdisplay   "/dev/sdb3" is a new physical volume of "1.35 TiB"   --- NEW Physical volume ---   PV N........
  • LibreOffice Recovery Automatically Saved Documents


    Browse to this directory: ~/.config/libreoffice/3/user/backup/........
  • pxe-32 tftp open timeout


    pxe-32 tftp open timeout   The solution was to enable tftp in xinetd with "chkconfig tftp on". See the troubleshooting below:   chkconfig --list NetworkManager     0:off    1:off    2:off    3:off    4:off    5:off    6:off acpid              0:off&n........
  • WD 20EARX Dead Again


    Another new drive bad from the start:   Jun  2 15:14:18 one-desktop kernel: [15895.386779] ata2.00: exception Emask 0x50 SAct 0x1 SErr 0x280900 action 0x6 frozen Jun  2 15:14:18 one-desktop kernel: [15895.386782] ata2.00: irq_stat 0x08000000, interface fatal error Jun  2 15:14:18 one-desktop kernel: [15895.386784] ata2: SError: { UnrecovData HostInt 10B8B BadCRC } Jun  2 15:14:18 one-desktop kernel: [15895.386788] ata2.00: cmd 60/0........
  • WD 20EARX 2TB Bad within days


    This is just trying to read 5GB off the drive with dd and the drive initially tested ok but shortly after I wondered why I was seeing 2MB/s read speeds.  Notice the "current_pending_sector", anytime I've seen it at anything above 0 even with no other bad fields/attributes, it means the drive is bad. ata1.00: exception Emask 0x0 SAct 0x3 SErr 0x0 action 0x0 ata1.00: irq_stat 0x40000008 ata1.00: failed command: READ FPDMA QUEUED ata1.00: cmd 60/00:00:........
  • PHP How To Create and Assign Variables from POST/Submit FORM


        foreach ($_POST as $key => $value) {            if ( $key != submit )                         {                            $values.="$key=$value<........
  • eth0 changed to eth1 or eth2 and the solution to fix it


    If you move your hard drive(s) around to other computers/servers, you'll find that your eth0 keeps getting higher, the first time it will become eth1 and then eth2 etc and even higher if your server has dual or quad NICs.  The reason is that udevd basically assigns eth0 tot he first NIC it finds and remembers it, if it encounters a NIC with a different MAC, it assigns it one higher (eg. eth1). See the example below, I have eth2 now so how do I fix it?........
  • Bad Hard Drive Slows Down Computer


    Here's a proven example of what a bad hard drive can do, it was technically functioning OK in a RAID array but the system became extremely low and the load become high and IOWAIT was even higher and I always thought it was a bad application.  The truth is that this failing 1TB Hitachi has slowly gotten worse and caused huge slowdowns, (eg. 100% load on Thunderbird waiting for e-mails to load etc..).  After swapping it out, tabs change instantly, emails are not lagged, and........
  • Delete arp entry from Linux Howto


    arp -a syst (192.168.1.122) at 21:96:43:3a:62:a2 [ether] on eth0 arp -d 192.168.1.122 If you get an error do: arp -d 192.168.1.122 -i eth0 Sometimes the arp cache just won't clear either, some say it should automatically but there are cases where the above doesn't work.  I believe it may be that some network applications are keeping the entry alive but this is just a guess.........
  • Thunderbird How-To Copy/Backup/Restore Accounts and Settings to Another Computer


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