/ - rtt - IT Resource

  • Linux What is umask (user mask) for file and directory creation permissions and how to calculate umask and change the defaults


    umask are the default permissions that are applied when a file or directory are created.  To see this in action simply just "touch filename" or "mkdir somedir" and you'll see what default permissions are applied. The first thing I always tell people you should know is to NEVER change the defaults unless you are making them more restrictive.  But they work well and if you change the defaults you could end up creating a file without permission to read........
  • Linux Permissions and Groups Real Usecase for Group Access


    I have a directory structure which the primary user needs full access on but wanted a user to access only a specific directory within the main directory (so they could write in there only and nowhere else). Here's what I did: [root@compevo8001 dllnow]# ls -alh drwxrwxr-x  2 someuser software  4.0K Oct 19  2017 ExpireYMD-2017-11-20 drwxrwxr-x  2 someuser software  4.0K Nov 19  2017 ExpireYMD-20........
  • genisoimage errors with long filenames and deep directory structures


    You'll have to violate the iso9660 standards but it is necessary if you want to preserve your filesystem and filenames and shouldn't be an issue as long as you are using a modern OS like Linux. genisoimage -o Backup-Myfiles.iso -r -J -joliet-long  /some/path/ You will get errors like below (even enabling joliet-long didn't help) genisoimage: Error: /some/filename.pdf have the same Joliet name Joliet tree sort failed. The -joliet-lo........
  • 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........
  • Proxmox understanding the directory structure and why an NFS datastore appears to be missing files/isos


    Proxmox at the root of your storage creates and "images" and "templates/iso" folder for VM images and iso's respectively.  It ignores files in any other location.........
  • Linux bash shell doesn't show username, hostname or current path fix solution


    Usually this is because when you created your user you added a user but didn't create their home directory and/or for some reason your .bashrc and .bash_profile in ~ (home) is broken/missing. In your home just create the following files with the following content to solve it: .bashrc and .bash_profile. To apply it just relogin/start a new bash session # .bash_profile # Get the aliases and funct........
  • PHP Displaying Blank Page on Apache


    Almost always the reason will be that the php.so file is missing but also that php.conf is misconfigured. In the problem machine it is actually PHP 7 installed so if you reference PHP 5 of course things wil be broken! Take for example here: cat /etc/httpd/conf.d/php.conf # # PHP is an HTML-embedded scripting language which attempts to make it # easy for developers to write dynamica........
  • Starting httpd: httpd: Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: /etc/httpd/modules/libphp5.so: cannot open shared object file:


    Starting httpd: httpd: Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: /etc/httpd/modules/libphp5.so: cannot open shared object file: No such file or directory This is basically caused by the PHP module specified in php.conf being non existent.  The error tells us it couldn't fnd /etc/httpd/modules/libphp5.so........
  • VMWare ESXi 6.7 SSH/PowerShell CLI Commands


    [root@localhost:~] BootModuleConfig.sh          echo                         host-ind                     nfcd                   ........
  • error while loading shared libraries: libasound.so.2: cannot open shared object file: No such file or directory


    ./tronwatch: error while loading shared libraries: libasound.so.2: cannot open shared object file: No such file or directory [root@testing linux-unpacked-1.0.7]#   Solution: yum -y install alsa-lib-devel........
  • ./xmr-stak: error while loading shared libraries: libmicrohttpd.so.10: cannot open shared object file: No such file or directory


    The solution is just to install libmicrohttpd-dev ./xmr-stak ./xmr-stak: error while loading shared libraries: libmicrohttpd.so.10: cannot open shared object file: No such file or directory libmicrohttpd libmicrohttpd10 - library embedding HTTP server functionality libmicrohttpd-dbg - library embedding HTTP server functionality (debug) libmicrohttpd-dev - library embedding HTTP server functionality (development) $ sudo apt-get i........
  • 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........
  • ./nsgpucnminer: error while loading shared libraries: libOpenCL.so.1w: cannot open shared object file: No such file or directory


    ./nsgpucnminer: error while loading shared libraries: libOpenCL.so.1w: cannot open shared object file: No such file or directory  ........
  • convert.im6: Unknown field with tag 317 (0x13d) encountered. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/788.


    convert "file.TIF" "resize.jpg" convert.im6: Unknown field with tag 317 (0x13d) encountered. `TIFFReadDirectory' @ warning/tiff.c/TIFFWarnings/788. I've been getting this error in ImageMagick on some .tif files even though it seems to actually convert properly.........
  • Linux How To Rename Files


    To remove all spaces from all files in the current directory linux rename remove spaces rename "s/ //g" * The above won't work in Centos but in Debian based distros as rename in Centos doesn't work that way. See this more comprehensive article.........
  • OpenVZ container will not stop Child 546246 exited with status 1


    vzctl stop 4096 Removing stale lock file /vz/lock/4096.lck Stopping container ... Child 546213 exited with status 1 ^Z [1]+  Stopped                 vzctl stop 4096  ~]# rm /vz/lock/4096.lck rm: remove regular file `/vz/lock/4096.lck'? y  ~]# vzctl stop 4096 Stopping container ... Child 546246 exited with status 1........
  • [warn] VirtualHost 10.2.5.101:443 overlaps with VirtualHost 10.2.5.101:443, the first has precedence, perhaps you need a NameVirtualHost directive


    [root@thetor2017 conf]# service httpd restart Stopping httpd:                                            [  OK  ] Starting httpd: WARNING: MaxClients of 3000 exceeds ServerLimit value of 300 servers,  lowering MaxClients to 300.  To increase........
  • Centos 7 - How To Install NFS and Mount Remotely


    1.) First install nfs-utils [root@bcitcourse ~]# yum -y install nfs-utils Loaded plugins: fastestmirror base                                                         &n........
  • 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........
  • Install NFS (Network File System) On Debian Linux Ubuntu Mint Howto


    sudo apt-get install nfs-kernel-server #oops there are no exports so it won't startsudo /etc/init.d/nfs-kernel-server start * Not starting NFS kernel daemon: no exports. #we will use the /tmp/nfstestshare directory for our NFS share mkdir /tmp/nfstestshare #add it to /etc/exports (basically what NFS checks to determine what to make an NFS share) /tmp/nfstestshare 192.168.1.5(rw,sync,........
  • 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........
  • OpenVPN auth-user-pass-verify ENV script error


    Starting with newer versions of OpenVPN I believe 2.2+ you need to have "script-security 3" set or you can't execute a third party script. Prior to that you could also use the auth-user-pass-verify like this: auth-user-pass-verify ./validate.pl "$username $password $ip" via-env Options error: the --auth-user-pass-verify directive should have at most 2 parameters.  To pass a list of arguments as one of the paramete........
  • Howto install ioncube loader to PHP by Zend


    First of all download the raw .so file from zend: Copy the one relevant to your PHP version to  /usr/lib64/php/modules/ eg.: cp ioncube_loader_lin_5.3.so /usr/lib64/php/modules/ Then in your /etc/php.d/ directory create the file: vi /etc/php.d/zend.ini zend_extension = /usr/lib64/php/modules/ioncube_loader_lin_5.3.so After that restart apache/httpd and you'll be good to go!........
  • postfix errors fatal: no SASL authentication mechanisms /usr/libexec/postfix/smtpd: bad command startup -- throttling solution


    Jul  3 22:12:17mailserver postfix/smtpd[6195]: fatal: no SASL authentication mechanisms Jul  3 22:12:18mailserver postfix/master[4881]: warning: process /usr/libexec/postfix/smtpd pid 6195 exit status 1 Jul  3 22:12:18mailserver postfix/master[4881]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling This only ever happens in my experience when the authentication method is actually Dovecot.  Usually the problem........
  • 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........
  • How To Install Seamonkey Web Browser on Debian Ubuntu Linux Mint


    It's a little tricky if you are running a 64-bit OS which most people will be. The weird thing is that the Seamonkey website for Linux seems to only provide a 32-bit download. seamonkey-2.49.2.tar.bz2 First unpack it tar -jxvf seamonkey-2.49.2.tar.bz2   Try to run it  ./seamonkey XPCOMGlueLoad error for file /home/queenlazina/Downloads/seamonkey/libmozgtk.so: lib........
  • SMF Forums / Simple Machines Forums Not Displaying Images Theme or Styles Properly using 127.0.0.1


    This is one thing that has me wondering about SMF.  It is apparently a known issue but in the latest version and new install nothing looked right because it was using http://127.0.0.1 to find everything!  How on earth would it ever do this or think it is normal? Excerpt of crazy html code it produces that causes the issue:     <link rel="stylesheet" type="text/css&qu........
  • vzquota : (error) Quota on syscall for id 4532: No such file or directory vzquota on failed [3] OpenVZ Error and Solution


    Starting container... vzquota : (error) Quota on syscall for id 4532: No such file or directory vzquota on failed [3]   Solution vzquota drop 4532 Then start the container and it should work.  It actually happened after migrating the VPS manually to ano........
  • Apache htaccess Custom ErrorDocument not working properly for root home page 403 Error Issue and Solution


    So I have a domain "testdomain.com". Inside test domain.com's root is the following .htaccess: Options +FollowSymLinks -Indexes ErrorDocument 403 /launch/index.html Order Deny,Allow Deny From All Allow From 192.168.1.2 When you visit anything other than root things work fine.  Eg. if you visit http://testdomain.com/somedirfile.html It will show the right error in /launch/........
  • 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........
  • OpenVZ Solutions vzquota : (error) Can't open quota file for id 123123, maybe you need to reinitialize quota: No such file or directory


    Error: Unable to apply new quota values: quota not running Container start failed (try to check kernel messages, e.g. "dmesg | tail") Killing container ... Container was stopped Error: Unable to apply new quota values: quota not running Can't umount /vz/private/123123: Invalid argument [root@rtt 123123]# vzquota on 123123 vzquota : (error) Can't open quota file for id 123123, maybe you need to reinit........
  • Linux input/output error invalid program cannot read data on some CD-Rs and DVD-Rs on ASUS BW-16D1HT


    I've never seen this before in all of my years.  I have some very old CDs and DVDs 12-15 years old that seem not to work in this BD-R/DVD-R/CD-R Asus drive. The discs are fine actually and ironically they even work fine on a normal LG USB based BD-R drive! Here are the errors in Linux: [2914936.884924] attempt to access beyond end of device [2914936.884927] loop1: rw=0, want=730424, limit=688384 [2914954.556873] attempt to........
  • Unable to load dynamic library '/usr/lib64/php/modules/module.so' - /usr/lib64/php/modules/module.so: cannot open shared object file: No such file or directory in Unknown on line 0


    Getting this error on Centos 6 with PHP 5.3 when just running "php -v"   PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/module.so' - /usr/lib64/php/modules/module.so: cannot open shared object file: No such file or directory in Unknown on line 0 PHP Warning:  Cannot load module 'XCache' because conflicting module 'apc' is already loaded in Unknown on line 0 Solution:........
  • MySQL Cannot Update/Write to any database table solution


    This happened on Centos for no apparent reason with no obvious issue in the logs.  Data could be read fine but not written (possibly due to some corruption or out of memory issue in the OpenVZ container is the best guess).   All mysql update and insert queries failed freezing without any error log on any database and table. Tried to restart: service mysqld restart Timeout error occurred trying to stop MySQL........
  • Centos How To Update to Glibc 2.14 Plus


    Centos 6 requires GLIBC 2.12 however a lot of new programs you would want to compile may need a newer glibc.  You can't remove the old glibc since the whole OS is based on it but you can install the updated glibc alongside it and do an export pointing to your updated GLIBC. mkdir ~/glibc_install; cd ~/glibc_install wget http://ftp.gnu.org/gnu/glibc/glibc-2.14.tar.gz........
  • Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: /etc/httpd/modules/libphp5.so: cannot open shared object file: No such file or direct


    Stopping httpd:                                            [  OK  ] Starting httpd: httpd: Syntax error on line 221 of /etc/httpd/conf/httpd.conf: Syntax error on line 6 of /etc/httpd/conf.d/php.conf: Cannot load /etc/httpd/modules/libphp5.so into server: /etc/h........
  • 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........
  • Authentication refused: bad ownership or modes for directory /home/user SSH Public Key Authentication Failed Solution


    First of all I got this error after accidentally messing up my usergroup by using usermod -G user group When I would login using SSH keys it would fail: sshd[2020]: Authentication refused: bad ownership or modes for directory /home/one No worries, the fix is simple! chmod g-w /home/use........
  • 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........
  • ecryptfs how to mount or recover from a backup


    The easiest way to recover or mount an off-line ecryptfs directory is the built-in command from ecryptfs sudo ecryptfs-recover-private It will find your wrapped passphrase and ask for your password and mount it in tmp. Much easier especially when your current active OS is using ecryptfs too. This a fantastic tool when going through old backups.........
  • rsync specify alternate port non-standard port than 22


    It is not obvious but the rsync --help  rsync --help|grep port      --port=PORT             specify double-colon alternate port number --port does not do anything at all actually for some strange reason it still uses 22 You have to specify a manual ssh command to make it work: -e 'ssh -........
  • 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 -........
  • 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              ........
  • How to extract view contents of initramfs image gzip'd


    Very simple browse to your /boot directory It does make more sense to extract the image in its own directory eg "initramfs-blabla-dir" as it will literally extract directly to the pwd. cp initramfs.img someotherdir cd someotherdir zcat initramfs-3.10.0-514.el7.x86_64.img | cpio -idmv........
  • Migrate Centos 7 from Single HDD to mdadm RAID 10 array:


    Done on Centos 7.3 very important as clearly based on older guides it was a lot easier and more simpler!  Hint do not use grub2-install! One huge caveat if you are an oldschool user or sysadmin who has avoided UEFI booting The normal way will not work here if your Centos was using UEFI.  Newer systems use it by default. The easiest way to check is to do an fdisk -l if your sy........
  • How to change reserved blocks in Linux partition


    user@box:~$ sudo tune2fs -l /dev/md99 [sudo] password for user: tune2fs 1.42.9 (4-Feb-2014) Filesystem volume name:   <nuser> Last mounted on:          /mnt/md50 Filesystem UUID:          976a8655-2619-4587-878c-dab07f7b7652 Filesystem magic number:  0xEF53 Filesystem revision #:    1 (dynamic) Fi........
  • 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........
  • Linux Mint Intel Screen Tearing Horizontal Line Solution Fix


    sudo mkdir -p /etc/X11/xorg.conf.d/ sudo vi /etc/X11/xorg.conf.d/20-intel.conf   Type "i" and enter the following: Section "Device"   Identifier      "Intel Graphics"   Driver          "intel"   Option          &........
  • process_usershare_file: stat of /var/lib/samba/usershares/dump failed. Permission denied - samba error solution


    [2017/06/12 21:14:04.991169,  0] ../source3/param/loadparm.c:3259(process_usershare_file)   process_usershare_file: stat of /var/lib/samba/usershares/dump failed. Permission denied Issue was the parent directory needed chmod 755........
  • Linux Mint Install Netboot PXE Guide Howto


    *Update so this doesn't work it must be something to do with the path of nfs or something else but the installer fails with "Installer crashed" at the end whereas with the CD/USB it works. This assumes you've already installed and configured a separate PXE/DHCP server somewhere else and your /tftpboot directory is setup. This is for Linux Mint 18.1 but generally applies to most versions although you may have tro change things like "casper"........
  • xdebug easiest howto get going


    Just make sure you have php-xdebug installed and edit your php.ini: [xdebug] xdebug.profiler_enable = 0 xdebug.profiler_enable_trigger = 1 xdebug.profiler_output_dir = "/tmp/xdebug/" xdebug.output_name = "cachegrind.out.%t-%s" Also make and set permissions on /tmp/xdebug: mkdir /tmp/xdebug chmod 777 /tmp/xdeb........
  • wget how to resume download!


    It's very simple you just use the "-c" switch and wget will resume the file (make sure you are in the same directory) or specify -O /path/to/partialdownload.zip wget -c http://someurl/file.zip........
  • text to speech for Linux


    espeak - is horrible and sounds very old and robotic echo "hello there"|espeak #don't know how to use mbrola and plugins cicero jovie just seems to be a graphical interface to espeak There is also sbreader/sapi Google's Text To Speech Works Quite Well #!/bin/bash say() { local IFS=+;/usr/bin/mplayer -ao alsa -really-quiet -noconsolec........
  • tar extraction changes ownership of /root directory


    I have a tar and when extracting it changes /root to a uid and gid of the source server which is bad especially for /root! You can get around this by extracting as follows: Add the -o switch which means "--no-same-owner" tar -o -zxvf sometar.tar.gz........
  • zip warning: name not matched: in Linux Solution


    There are usually two reasons for this. #1 The most common is that you need to enable the -r (recursive) flag with zip to make it recurse into directories. So the solution is to use -r zip -r somefile.zip yourfiles #2 If you are using bash scripting based on ls without the full path or for some other reason the full path is missing, zip looks for the files in the current directory so this will always fail.........
  • ls in Linux with full directory path with files howto


    Normally an ls will just produce the actual contents of the current or target directory eg. ls mydir myfile1 myfile2 myfile3 But what if you need to find the full or relative path to another program that cares whether that be zip or etc.? You need the "-d" switch and the asterisk inside the actual directory. ls -d mydir/* mydir/myfil........
  • bash how to check if a symlink exists as a file or directory


    To check if a file/directory is a symlink in bash: if [ -L /some/path/file ]; then echo "OK we're a symlink" fi   That's all there is to it.........
  • Linux how to whois query other gTLDs such as .club solution


    whois in Linux is incredibly out of date and does not seem to recognize most new TLDs domains, but there is a quick and easy tip/hack/tweak for this. An example of new TLD's site as .review .site .club whois somesite.club No whois server is known for this kind of object.   bash to the rescue Now I did try to apply this in .bashrc but DO NOT!  I think the * wil........
  • ecryptfs errors


    ecryptfs-mount-private Enter your login passphrase: Inserted auth tok with sig [ee16d84] "into the user session keyring mount: No such file or directory" [  156.118113] ecryptfs_mount: kern_path() failed [  156.118431] Reading sb failed; rc = [-2] [  164.233055] traps: mate-notificati[3472] trap int3 ip:7f43d7002c13 sp:7fff162c6600 error:0 [  166.017061] ecryptfs_mount: kern_path() failed........
  • 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:........
  • ENOM how to do a 301 redirect to another domain/site


    Just manage your domain in Enom and choose "Host Records" Choose "URL Redirect" as the record type. As shown below choose the URL and add "?redir_mode=301" to the end of it. To test the 301 and make sure it is a 301 (unlike Godaddy which really did a 302 when I chose 301!).  ........
  • Linux how to check http headers using bash/curl for SEO


    What code is being returned or where is a URL/domain redirecting you to?  Curl makes this easy and simple: curl -I yourdomain.com........
  • How To Disable htaccess inheritance or exclude a directory


    The only real way us to do the following in the root of your site's .htaccess RewriteRule ^somedirectory-not-to-inherit/.*$ - [L]........
  • root/home directory has ownership changed to the wrong user/owner mysteriously


    I figured out what caused this but don't have the solution just yet.  I would deploy a certain script from a .tar.gz to some servers and found that /root was always owned by user and group "1000.1000".  This corresonded to the user who made the .tar.gz. For some reason when extract normally with "tar -zxvf file.tar.gz" it impacts the parent directories ownership.  There must be some recursion going on or possibly the .tar.gz but I haven't f........
  • sshd[10470]: Authentication refused: bad ownership or modes for directory /root


    This can be a case of bad permissions or modes as the error says.  Normally one would assume permissions but often a script may change ownership of /root to something else. This was the case half the time I've encountered this. So in short make sure ownership is correct chown -R root.root /root........
  • Unable to mount location Failed to retrieve share list from server: No such file or directory solution


    Cannot even "Browse Network" when clicking on "Windows Network" Unable to mount location Failed to retrieve share list from server: No such file or directory logs: [2017/02/14 00:16:44.271314,  0] ../source3/nmbd/nmbd.c:58(terminate)   Got SIGTERM: going down... [2017/02/13 17:35:41.797944,  0] ../lib/util/become_daemon.c:124(daemon_ready) &........
  • K9 Mail Android Cannot See or View E-mails Disappear after reading - with Dovecot server. Solution


    This actually only happened after an e-mail server ran out of space due to run away log files.  Normal Desktop clients were not affected.   It appeared to be a bug in K9 mail but even reinstalling/wiping all settings did not fix it (read e-mails would still not reappear). This is moreso a bug in Dovecot where it probably messes up the index files. How do you fix this in Dovecot/your e-mail server? You need to delete the do........
  • ERROR 2013 (HY000): Lost connection to MySQL server during query


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  • OpenVZ - how to manually restore a VPS from another host or backup


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  • Howto Copy/Backup/Restore All Firefox Settings/Preferences/Addons/Bookmarks to another computer/desktop


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  • xen how to resize an image properly


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  • Windows Secret Hidden Temp Directory to free out of disk space issues


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  • Directadmin Enable SSL


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  • Directadmin Install Segfault Error


    ************************************* *                                   * *   All parts have been installed   * *                        ........
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  • Linux Out of Memory OOM Object Killer Solution "Out of memory: kill process 1955 (sshd) score 81 or a child"


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  • Centos Solution to "Warning: Unable to open /dev/fd0 read-write (Read-only file system). /dev/fd0 has been opened read-only."


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  • Linux how to use find recursively to find certain types of files/extensions


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  • Directadmin DA Install Guide


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  • Openvz Enable TUN/TAP OpenVPN


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  • Dovecot Enable SSL/TLS with your certificate


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  • Postfix Enable SSL/TLS with your certificate


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  • Apache Forbidden You don't have permission to access / on this server.


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  • named/bind cannot find zone file, load zone files without specifying full directory path/loading master file genuine.com.zone: file not found


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    Check the value of your ethernet_dev=venet0:0 setting in your /usr/local/directadmin/conf/directadmin.conf file and the output of /sbin/ifco


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