EVERY NOTE, IN ONE PLACE
Article archive.
Notes since 2007, organized by their original publication year.
20246 notes
How to install Raspberry Pi OS to NVMe storage by rpi-imager cliHow to change boot into text console or GUI in Raspberry PiHow to setup wifi (5G) by cli on Raspberry PiHow to fix "no matching host key type found"How to find and kill an advisory lock query?How to fix SSL_ERROR_RX_RECORD_TOO_LONG on nginx
20234 notes
20191 notes
20181 notes
20162 notes
201523 notes
How to fix memory leak from big nfs_inode_cacheBlacklist and Whitelist with AmavisdHow to block external email from domains or individual emailHow to change the recipient of the "daily report"Configuring Whitelist/Blacklist on ZIMBRA 8.5/8.6White list for ZIMBRA to bypass RBLsMail preview does not fill the screen in Zimbra Web Client 8.x and Google ChromeHow to fix "loopback devices is strongly discouraged for production use" on DockerHow to fix dead VLAN (4095) on neutronHow to fix cloud-config not work with error "Failed loading yaml blob"How to fix "Error: Queue report unavailable – mail system is down"MySQL ERROR 1206: The total number of locks exceeds the lock table sizeMySQL Replication: 'Got fatal error 1236'How to fix an ssh connection refused with "no hostkey alg"How to list members in distribution listsHow to fix "Cannot load from mysql.proc. The table is probably corrupted"Web site for check hardware warrantyHow to send Email with netcatHow to resolves zmconfigd service can't start on ZIMBAR 8.5How to change HELO hostnameHow to change a network interface name on CentOS/RHEL 7SysVinit and systemd command comparison tableWhere to find OpenStack Cloud Images
201419 notes
How to fix yum return Segmentation fault errorHow to convert string to lower caseHow to change an iDRAC password using RacadmHow to fix bind hangs on generating rndc keyHow to fix "SSL_connect ... certificate verify failed" on puppet clientHow to find delivery performance of Zimbra Mail ServerHow to fixes ZImbra Desktop can not start after windows updatesInstalling MariaDB 10 on Ubuntu 12.04 LTSScanning heartbleed bug with the nmap NSE scriptCritical Security: Patch for OpenSSL Heartbleed VulnerabilityHeartbleed Bug: OpenSSL Security FlawRescan a SCSI bus without rebootingHow to enables command-line history in SQL*PLUSHow to get a day before current time in BashShow running processes in Oracle DBHow to trim space from bash variableHow to turn off Oracle password expirationHow to fix chroot return "Exec format error"How to count blank lines and non-blank lines in a file
201370 notes
Export mysql database based on a where conditionHow to read pcap file in Linux CLI using tcpdumpInstalling MySQL 5.6 using the MySQL yum repository[Bug] Invalid of GRANT command will breaks replicationHow to redirect stdout and stderr to log fileHow to compress mysqldump output with gzip/bzip2How to list stored procedures and show procedure code in MySQLFind top frequently using queries on MySQLIf / else statements on bash scriptHow to install Apache2 worker MPM, FCGI and APC on CentOSHow to install Apache worker + PHP FastCGI and PHP-FPM on Ubuntu 12.04 LTSHow to copy a table in MySQLList of default ports used by Zimbra Mail ServerHow to fix error Table upgrade required. Please do "REPAIR TABLE" (2045019)How to disable IPv6 on CentOSHow to change default OS MTA to the ZCS PostfixHow to uses mysqldump to get structure or schema data onlyHow to get new email notifications for Zimbra mail systemHow to disable Zimbra's duplicate email detectionHow to remove/purge MySQL binary logsHow to install SendmailAnalyzer on Zimbra mailSetting Microsoft Outlook to use Zimbra Directory Service (LDAP)How to share full account (all folders) to another user in Zimbra mailHow to fix SMTP authen fail with error "curl_easy_perform: error(56)"How to install CentOS 6 for Zimbra Mail ServerEnable Zimbra Global Address List (GAL) to see all domainsBypass spam checking for internal messages in Zimbra 8.xHow to reset virus database on ZimbraSetting a schedule delayed shutdownTelligent has acquired Zimbra from VMWareHow to check MySQL password on Zimbra serverTips for speeding up dump and import data in MySQLHow to fix yum error: database disk image is malformedCheck MySQL database size using SQL queryHow to fix "Service unavailable from cause of too many queries to uribl.com"Enable SFTP logging transferFind out which processes are using swap spaceHow to resolve yum error [Errno 14] PYCURL ERROR 6 - "Couldn't resolve host"How to fix error: 97: Address family not supported by protocol on ZimbraHow to fix "wget: unable to resolve host address" issueHow to check mailbox usage of all accounts in Zimbra mail serverHow to change HELO message in Zimbra Mail ServerMonitor multiple logs in a single shell with MultiTailBash Autocomplete feature on CentOS LinuxHow to check that the Apache compression (gzip, deflate) is working?How to delete emails from the Zimbra MTA queueSync Email, Calendar, Contact between iPhone, iPad, and ZimbraHow to disable InnoDB storage engine on MySQLListing email, name, quota and status of all accounts on ZimbraHow to get a list of all distribution list membersHow to get UUID of the hard disk in Linux syetemHow to monitor Zimbra servicesHow to manual purging the Zimbra mailbox dumpsterHow to enable Dumpster or Email Retention PolicyHow to detect and prevent brute force attacks on ZimbraHow to set web server mode on Zimbra mailHow to monitor messages statistics of Zimbra mail serverDefinition of DNS status: NXDOMAIN, NOERROR and SERVFAILHow to improve DNS lookups on Linux systemAssigning retention policies to email foldersSteps to install Ruby Version Manager (RVM) on CentOS 6How to fix "unary operator expected error" in bash scriptHow to create a partition size larger than 2 TB on linuxBackup incoming mail from zimbra system to another mail systemHow to transfer the anti-spam database to another Zimbra serverHow to install whois using yum on CentOSImproving Anti-spam on Zimbra with Whitelist/BlacklistZimbra users migration from 32-bit to 64-bit serverHow to fix "Error: 0x80300001" when install Windows Server in KVMInstall uTorrent on CentOS 6
201261 notes
How to backup and restore zimbra's usersHow to expand membership of "Distribution List" in ZimbraHow to extract a single file / directory from tar archiveHow to fix high CPU usage problem on BIND (named)How to config default Return-Path in php mailHow to check Zimbra versionA Comparison of Pros and Cons between InnoDB and MyISAMSetting Out Of Office on Samsung GalaxyNUMA Architecture and MySQLHow to set Out of Office auto-reply message in Zimbra WebmailHow to get physical number of CPU sockets on Linux serverHowto setting alway Reply/Forward in the original message formatHow to streaming export and import MySQL database to other serverHow to remote access Linux GUI in Windows with XmingHow to sync your Zimbra calendar to Android phoneHow to create self-signed certificate for Zimbra mail serverBenefits for users of Zimbra Mail ServerHow to calculate storage size for Zimbra mail serverHow to setting pop-up email notification in ZimbraDisplaying network traffic using tsharkHow to share your email folders in Zimbra mail serverChange name appears in From field on outgoing email of Zimbra webmailHow to allow view messages with external images on ZimbraHow to check status, start and stop on Zimbra serviceHow to unlock Zimbra AccountsPrevent Apache against Dos/DDos attack with mod_evasiveFix a prefix of it is already part of a volume on GlusterFSFix error when adding datastore in VMware ESXiZABBIX Monitoring Installation and Consulting ServicesGuide for fix incoming mail from outside problemsConfigure SSH Keys authentication with PuTTYHow to create Group Contact Lists on Zimbra mail serverHow to update dell server firmware with Dell Unified Server ConfiguratorHow to create tasks on Zimbra mail serverFix "zimbraRemoteManagementPrivateKeyPath (/opt/zimbra/.ssh/zimbra_identity) does not exist" on Zimbra Admin consoleHow to create an admin account on Zimbra mail serverFix "Permission denied" issue when running zmsshkeygen commandZimbra JVM issue with OpenVZHow to change the theme of all Zimbra clientsHow to resolve "unable to determine enabled services from ldap"Monitor apache Virtualhosts real-time activity with apache-topDetails of the Zimbra packages used during installationSharing calendars on Zimbra mail serverHow to convert all MyISAM tables to InnoDB in a MySQL Database Installing and configuring Zimbra DesktopAdd SPDY support to Apache web server with mod_spdyFix missing dependency libmysqlclient.so.15 when installing MySQL-python via yumAdding contacts to the Address BookLimitations of Funambol Outlook Sync client with Zimbra hostingManaging signatures on Zimbra Mail ServerHow to limit SCP bandwidthForward incoming email to another email on Zimbra mail serverMySQL server hardware, OS and configuration tuning tipsHow to sync Calendar, Contact and Email with Zimbra Mail Server on AndroidHow to add a Zimbra mail server Calendar to an iPhoneMass killing MySQL connectionsUsing Zimbra WebmailZimbra Mail Server (ZCS) installation servicesHow to redirect stderr and stdout to a fileHow to find all tables use particular storage engine on MySQLHow to list the files from rpm package by rpm or yum-utils
201137 notes
[Infographic] History of LinuxEnable multiple SSL vhosts on a single IP with ApacheHow to set a crontab to run command on the last day of every month.How to broadcast a message to all users and direct message to some userMySQL replication: 'show master status' shows 'Empty set (0.00 sec)'Install OpenVZ OS level virtualization on CentOSIntroducing Putty ManagerHow to install dig, host and nslookup commands on your systemAfter Installed DirectAdmin, the admin user cannot loginHow to delete messages from mail queueFormat NTFS partition on external hard drive from CentOS / RHEL linuxHow to mount NTFS filesystem with read/write support on CentOS / RHEL linuxLinux last Command – List Users Who Logged InInstall CyanogenMod 7 Gingerbread (Android 2.3.5) on Motorola DefySetup a transparent proxy over ssl https with SquidHow to build RPM package for the Coova-chilli with CentOS 5How to jailbreak iPhone, iPod touch and iPad with JailbreakMeHow to install Linux USB drives using UNetBootin tool[UPDATE: Centos 6 officially released] Centos 6 is available in a few daysSquid fatal error: Could not determine fully qualified hostnameHTC Flyer 7-inch Android tablet hands-onManaging Cyrus IMAP server - Cyrus system administrationOpenldap with Red Hat 6: ldapadd ldap_bind: Invalid credentials (49)How to install Dell OpenManage Server Administrator (OMSA)How to rebuild corrupted RPM databaseUpgrade LG Optimus One (P500) to CyanogenMod 7 Gingerbread (Android 2.3.3)How to configure Active Directory authentication with Apache web serverHow to integrate ClamAV into Pure-FTPd for virus scanningRPM repository of RPM add-on packages for Red Hat Enterprise Linux and CentOSRed Hat changes its distribution policyRestrict some users to sending mail only to internal domainMultitouch configuration for Apple Magic TrackPad and Ubuntu 10.10 (Maverick)Preventing thwart SSH attacks with DenyHostsHow to save/restore and backup iptables rulesHow to install ClamAV on CentOS 5 (RHEL 5)How to root Motorola Defy with SuperOneClick for 2.1Jailbreak iPhone, iPad and iPod touch on iOS 4.2.1 with Greenpois0n
201016 notes
Red Hat Enterprise Linux 6 releasedUbuntu 10.10 ‘Maverick Meerkat’ now available for downloadOpenSUSE launches Smeegol OS based on MeeGo interfaceUbuntu shows off prototype technology based on computer-visionFree Antivirus 2011: Antivirus Software You Do Not Need to Buy from a VendorUbuntu 10.04 live CD with built-in GMA 500 supportHow to update the max_connections in MySQLHow to change Host ID for LinuxDownload package using yum commandProxy Auto Configuration (PAC) - Proxy auto-configDifferent types of kernel packages in Red Hat Enterprise LinuxRed Hat launches Red Hat Enterprise Linux 5 update 5 (RHEL5.5)Red Hat Enterprise Virtualization [RHEV]How to Configure Service Dependency in Red Hat Cluster SuiteAdd Windows (TrueType) Fonts in GNOME desktopHow to jailbreak iPod touch 3.1.2 (iPod touch 2G)
200966 notes
How to Install VLC Media Player for LinuxHow to install Google Chrome in Fedora LinuxConvert RPM to DEB or DEB to RPMHow to Get Flash plugin to Work on Fedora x86_64 (64-bit)Network Card Bonding On Red Hat Linux and CentOSRed Hat 4, 5 take a very long time to boot and iostat output incorrectFind Out Which RPM Installed a Specific File by rpm or yum CommandDowngrade iPod touch, iPhone from 3.1.1 to 3.0 firmwareHow to check the SUSE Linux Enterprise and Open Enterprise Server for Linux versionHow to read memory usage with the free commandThe "Mailbox is locked by POP server" problemHow to check the version of Red Hat Enterprise Linux and CentOS LinuxChange I/O Disk Scheduler without RebootHow to Restore Defaults Gnome Desktop EnvironmentRHCE Red Hat Certified Engineer Linux Study Guide (Certification Press)Yum, Yellow dog Update, Modified and How to use YumA Practical Guide to Linux Commands, Editors and Shell ProgrammingWhy CPU stats between ps and top Command are DifferentHow to Set up GRUB to boot from both disks of mirrored RAIDHow to Configure yum Show Availble updates from exclude listWhat Is a Computer Cluster?RHCT exam, RHCT Training, RHCT Exam, Red Hat Certified TechnicianBuild Custome SUSE Versions from SUSE Studio[Resolved] Vulnerability in Firefox 3.5.1 Still bug with JavaScriptMandriva Flash 2009 Spring - Linux on flash driveSet up Quota Limits per User on CUPS Print ServerEnable Core Dumps for Daemons or Services in Red Hat Enterprise LinuxGoogle Chrome OS - Success or FailInstall iPod touch, iPhone App from Internet without iTuneLinux Virtualization Hypervisor Kernel-based Virtual Machine (KVM) Raleased 87Yellow Dog Linux (YDL) 6.2 releasedHTC Hero Android Platform with Flash SupportWRT160NL Linux based Wireless-N Router with Storage LinkFirefox 3.5 RC2 (Release Candidate 2) ReleasedInstall ipa file iPhone, iPod touch 3.0 from iTune syncJailbreak iPod touch 2nd Gen 3.0 Firmware #7A341How to Jailbreak iPod touch, iPhone to 3.0 Official FirmwareRed Hat KVM virtualization suite to be released in RHEL 5.4How to Disable Firewall on Red Hat Enterprise Linux, CentosRHCE exam, Red Hat certification exam, Red Hat Certified RHCERed Hat Enterprise Linux 6 (RHEL6) Impacted by Fedora 10 RHCE/RHCT Troubleshooting Scenarios Leaked!Red Hat RHCE, RHCT: Certification, Training, Course, Exam What is smartd and how to use itDisable the auto complete feature of the BASH shellEnable Telnet in Linux ServerEnable Dynamic CPU Speed Scaling in LinuxControlling Core Dump Files in LinuxMoblin and Android Linux OS for Mobile DeviceGet Squid Performance Statistic from command line How large is the virtual address space for a processRescan SCSI to add, remove SCSI device without rebooting How to know x86 system capable running 64-bit softwareFree memory by flushing pagecache and slabcache How to increase the I/O priority of processesSet passwords policy against a dictionaryAutofs version 5 FeaturesIncrease the Virtual Console ResolutionFind information on the maximum amount of memory that system can handleFind which RPM contains a specific fileInstall third party Nvidia graphics drivers in kernel-xenHow to use wpa_cli commandAnti-spam appliancesSet up your Linux for Wake On LAN (WOL)Improve mouse tracking in a Virtual Machine Manager (virt-manager)Regenerate a GRUB device.map file
200848 notes
Configure VLAN devices over a bond interfaceBridge multiple network interfaces to guest OSHow many of swap space for Linux systemAdd Thai Fonts to LinuxBluetooth Mouse with Linux (Logitech V470)Rebuild the kernel (complie kernel) from Kernel source.How to read hard drive device files nameHow to add a new hard disk to linux system.Determine x86-compatible Intel system is multi-processor, multi-core or supports hyperthreadingAfter installation machine hangs during first bootRed Hat Delivers First Integrated Linux-Based High Performance Computing PlatformHow to use command to restart or shut down Linux systemImplement and configuration Highly Available LVM (HA LVM) Export a directory with NFS v4 Fedora 10 Release Schedule and Accepted FeaturesLock user after a set number of login attempts but also automatically unlock after 5 minutesHow to compile Linux KernelForce users to change their passwords upon the first loginTest the connectivity to server using netcatDiskdump report error messages when restart the diskdump serviceFix the following error; LVM error VG meta data inconsistentUse IPv6 address be specified with scp, sftp and sshSuggested I/O scheduler for a Video on Demand (VOD) server using Red Hat Enterprise LinuxDecrease the time for rebuilding the RAID 1 arrayRe-shape or Grow a Raid 5 array.How to enable xdmcpOther Virtual network interfaces go down when bring down virtual network interfacesShow line numbers in vi/vim editor.Increase the maximum file descriptors for SquidReduce a non-root LVM.View the commented lines of text in a config fileConfigure the shell to logout automatically after a period of idle time.Access a USB flash drive in Linux.What is a Red Hat Enterprise Linux Installation Number and where do I get it?Disable some CPUs within Red Hat Enterprise Linux 5 without rebooting the systemResize multiple image files using command-line toolsUbuntu (Linux distribution)Copy a list of print queues from one server to anotherConfigure VSFTPD uses LDAP for authenticationRedHat 5 and RedHat 5.1 hang at the final stage of reboot or shutdownMake bridge multiple network interfaces on Xen host to guests os.Install fully virtualized Windows 2003 as a guest O/S on Xen.Fully-virtualized RedHat 5 Xen guest unstable?[Bug]Red Hat Enterprise Linux 4.5 system panic when I boot into the largesmp kernelWhat are the memory and CPU limits of the largesmp kernel in Red Hat Enterprise Linux 4?Non-Uniform Memory AccessInstall RedHat Enterprise Linux 5, Centos 5Linux
200735 notes
How do I turn off the bell/beepExtract files from an RPM packageSend Ctr + Alt + Del to the guest OS, not dom0Determined system's CPU(s) can run a fully virtualized guestMake a clone of a virtual guest operating system in RHEL 5Find the number of sockets a process currently has openCreate filesystems greater than 2 TerabytesMap Of The Linux File SystemView extended information about network connections using netstat?Setup SSH to disable direct root login.Logout the user from ssh after 15 minutes of inactivityUse SNMP and MRTG to monitor CPU, MEM and Disk use statusCheck boot parameters were passed to the kernelHow to Remove LILO, GRUB or Master Boot Record from systemForce fsck on the next boot sequenceSetup MRTG to monitor CPU workload , Memory and Disk use status with IOSTAT.Change the behavior of the copy (cp) command overwrite the existing file without promptChange my hostname or the machine name in Red Hat Linux.Telnet as the root userWhen you forgot root password.Mplayer Multimedia player for LinuxUsing the man commandMake dd give a progress report.Installing MySQL ClusterImprove disk performance for Red Hat Enterprise Linux running in a VMware and xen environment.How to rescan the SCSI bus to add or remove a SCSI device without rebootGNU/Linux distro timelineInstall Device Mapper Multipathing on SAN/NASHow to add a swap partition to my systemTransparent proxy in squid 2.63D Desktop Sun MicrosystemsMS ClusterLinux Cluster Concept [Fail-Over and Load-Balancing Cluster]Linux HistorySome help, please!