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Recent Posts:
- “Access denied for user ‘username’@’hostname’ (using password: YES)” – Error while connecting MySQL with PHP
- How to Restrict MySQL User Creation with Blank Password
- Beginners Guide to MySQL Data Types
- What is the purpose of utmp, wtmp and btmp files in Linux
- “expect” script to provide password to mysql_config_editor
- How to (Correctly) Change the UID and GID of a user/group in Linux
- PHPMyAdmin :: Existing configuration file (./config.inc.php) is not readable
- cp: omitting directory – error while copying a directory in Linux
- ORA-00257:Archiver Error, Connect Internal Only Until Freed
- How to Use user-defined Functions in awk
- Using Loops (while, for) in awk scripts
- Beginners Guide to Using “trap” to Catch Signals and Handle Errors in Shell Script
- How to Make a Variable read-only (constant) in Bash and Korn Shell
- Examples of “shift” Command in Shell Scripts
- Korn Shell select Loop
- How to use “break” and “continue” statements in shell scripts
- How to use until loop in Shell Scripts
- “while” Loop Examples in Shell Scripts
- Understanding MySQL Query Cache
- How to enable additional scsi logging in CentOS/RHEL
- chattr Command Examples to Change File Attributes (Make files immutable)
- How to Enable a Database Trigger
- When to use rescan-scsi-bus.sh -i (LIP flag) in CentOS/RHEL
- How to Disable rpc.quotad Service in CentOS/RHEL 6 and 7
- User Unable To Edit crontab, Error: “/tmp/crontab.Lm34gsJV: Permission denied”
- showmount Command Examples in Linux
- How to Enable Debug Mode for Chronyd Service in CentOS/RHEL 8
- How to Recover from a Corrupted or empty /etc/mtab file in CentOS/RHEL 7
- File Access Commands in Linux – find, sort, head, tail
- Status Commands in Linux – date, ps, who, uptime, finger, rup, ruser
- CentOS/RHEL : Unmounting a Windows Share Fails – “device is busy”
- How to Limit/throttle rsync transfer speed in Linux
- How to prevent SSH connections from disconnecting due to inactivity when using MobaXterm
- MySQL – How to Backup User Privileges as CREATE USER and/or GRANT Statements
- How to Set CPU Affinity for SYSTEMD Process in CentOS/RHEL 7
- How to verify if NX/XD is Enabled or Disabled in CentOS/RHEL 7 and 8
- How to Set Environment Variables for a systemd Service in CentOS/RHEL 7
- How to Set Resource Limits for a Process with Systemd in CentOS/RHEL 7 and 8
- How to add a Custom Script to systemd in CentOS/RHEL 7
- How to Disable user list on GNOME login screen in CentOS/RHEL 8
- How to Configure GNOME Console Login Banner in CentOS/RHEL 7 and 8
- How to Reset Root Password in CentOS/RHEL 8
- How to Count lines in a file in UNIX/Linux
- How to Change the default kernel (boot from old kernel) in CentOS/RHEL 8
- How to list or install only security updates with dnf in CentOS/RHEL 8
- How to activate a “SUSPENDED” LVM physical volume
- Examples of using dmsetup command in Linux
- How to Backup a MySQL Cluster
- How to Configure 2-way replication in an existing Master, Slave MySQL Replication environment
- Linux “seq” Command Examples
- How to Install an Configure MASTER PDF EDITOR IN UBUNTU
- How to check and repair ACFS with FSCK
- How to test a PHP script
- How to Set Space limits for MySQL for database/schema/table
- How to Configure SSH to restrict Users/Groups with allow and deny directives
- How to allow ssh with empty passwords in Linux
- What is the difference between & (ampersand) and && (double ampersand) while executing simultaneous commands on Linux
- What are Bash Exit Codes in Linux
- Downgrading an rpm package to a lower version (using “rpm” command)
- How to shrink a Temporary Tablespace datafile in Oracle
- How to Compress and Decompress .bz2 files in Linux Using bzip2 Command
- How To Shrink A Temporary Tablespace in Oracle Database
- Counting Rows Of A Table In MySQL Server
- How to Rebuild GRUB on MSDOS Partition Type in CentOS/RHEL/OEL 7
- How to Disable AUTOEXTEND Mode on a datafile in Oracle Database
- Oracle – How To Check if Autoextensible Datafiles Set To Maxsize Unlimited
- Failed to Download Metadata for Repo ‘repo_name’
- How to configure Linux Resource Groups (cgroups) for MySQL
- Oracle SQL Script to Detect Tablespace Fragmentation
- MySQL Table Maintenance – InnoDB, MyISAM, MEMORY, ARCHIVE
- Understanding mysqlcheck and myisamchk utilities
- CentOS/RHEL – How to Remove stale ISCSI Target Node Information from ISCSI Initiator Server
- CentOS/RHEL 6 Kernel Panic – “Out of memory” kernel parameter panic_on_oom is enabled
- How to enable core dump for Applications on CentOS/RHEL
- How to add additional language support in CentOS/RHEL
- What are “segfault” messages in /var/log/messages file
- Unable to login with GUI on CentOS/RHEL 7
- rpm: error while loading shared libraries: invalid ELF header
- MySQL – How to undo (rollback) a set of SQL statements
- lvremove failing to remove volume after using ‘shred’ command
- How to Configure Network Namespaces in Docker Containers
- How to change the default IP address of docker bridge
- “su: Authentication failure” – in Docker
- How to Pause and Resume Docker Containers
- How to find docker storage device and its size (device mapper storage driver)
- Understanding “docker stats” Command Output
- ‘docker images’ command error – “Permission Denied”
- Docker Basics – Expose ports, port binding and docker link
- How to split BCV and open oracle ASM database
- How to change the interface name in CentOS/RHEL 8 using prefixdevname
- Beginners Guide to Implementing Table Maintenance in MySQL
- MySQL – How to Set Maximum Rates for Connections and Queries
- How to configure EPEL repository in OEL 7
- MySQL: How to Set Account Resource Limits
- MySQL ‘show processlist’ statement
- Understanding the REVOKE statement in MySQL
- MySQL Grants – Setting User Permissions On Different Tables
- Excluding a table or database from MySQL replication
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- How to Create yum Repository in CentOS/RHEL