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  1. DevOps

    How to Use the chmod Command on Linux

    chmod -R 777 /path Control who can access files, search directories, and run scripts using the Linux’s chmod command. This command modifies Linux file permissions, which look complicated at first glance but are actually pretty simple once you know how they work. chmod Modifies File Permissions...
  2. DevOps

    Tutorial How to increase the size of the /tmp folder on Linux?

    What seems to have happened: Your / was full, then Ubuntu created a new partition, in RAM memory, to use temporarily. Now, this 100GB partition is not big enough for the job, either. What we can do: 1) increase the size of this partition just to do the upgrade 2) actually delete enough files in...
  3. DevOps

    Tutorial How to check if port is in use on Linux or Unix

    How do I determine if a port is in use under Linux or Unix-like system? How can I verify which ports are listening on Linux server? How do I check if port is in use on Linux operating system using the CLI? It is important you verify which ports are listening on the server’s network interfaces...
  4. DevOps

    Tutorial Fix rpmdb: Thread died in Berkeley DB library

    Symptoms If you see rpmdb errors during package management (during yum/rpm operations), like this: rpmdb: Thread/process 277623/140429100390144 failed: Thread died in Berkeley DB library error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error...
  5. DevOps

    Control Panel How to Setup cPanel WHM on a VPS / Dedicated Server

    cPanel is popular Linux-based web hosting control panel. It provides a graphical user interface to easily manage and host multiple websites on a single Virtual Private Server (VPS) or dedicated server. You can perform anumber of tasks (uploading files, creating emails, setting cron jobs...
  6. DevOps

    Control Panel How to Install CentOS Web Panel (CWP) on CentOS 6 and 7

    Installation guide To avoid facing any issues, please make sure to read all of this instructions manual thoroughly prior to the installation process. Requirements Before the Initialization of CentOS Web Panel installer: – We only support static IP addresses. We do not support dynamic, sticky...
  7. DevOps

    Tutorial How To Reset Or Change The Root Password In Linux

    Introduction In Linux, root privileges (or root access) refers to a user account that has full access to all files, applications, and system functions. Most basic Linux user accounts run with limited privileges. This keeps users from making mistakes or accidentally exposing the system to...
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