maintenance

GParted

botond published 2025/11/04, k - 11:16 time
Encyclopedia - GParted | Linuxportal
GParted (GNOME Partition Editor) is a free, open source, and user-friendly graphical partitioning tool that has become the standard partitioning program for Linux systems. This encyclopedia entry provides a detailed introduction to the software's history, purpose, and key milestones in its development, such as the introduction of NTFS and GPT support. The article guides the reader step-by-step, with numerous screenshots, through the most important disk management operations, from creating a partition table to creating, resizing, and moving new partitions, to safely finalizing the operations. A separate chapter covers the portable, bootable version of GParted Live, which also allows you to modify system partitions, and shows you how to start it. The article places special emphasis on security considerations, emphasizing the critical importance of backing up your data before partitioning.

What should we do if APT gives the warning "Missing signed-by=" or indicates the removal of the "trusted.gpg.d" key while updating our repositories?

botond published 2025/03/30, v - 10:14 time
What should we do if APT gives the warning "Missing signed-by=" or indicates the removal of the "trusted.gpg.d" key while updating our repositories? | Linuxportal
One of the basic, regularly recurring tasks of maintaining our Debian or Ubuntu-based servers and systems is updating the package repositories and installed software. I was just doing the usual update cycle on my server these days, which has been a bit behind lately, so I expected that several packages would be updated. However, the update process stopped with interesting messages that drew attention to an important change related to the management of the signing keys of the package repositories. In this article, we will look at how to deal with these problems.

Cron

botond published 2024/03/05, k - 10:40 time
Encyclopedia - Cron | Linuxportal
This encyclopedia entry provides a detailed introduction to the Cron system, the basic Linux tool for automating scheduled tasks. The description covers the structure of Cron, including the role of the background daemon and the crontab files containing the tasks. We will get acquainted with the Unix roots of the system and the development of modern implementations. The article places great emphasis on a detailed description of the crontab syntax, introducing the use of timing fields, special characters, and user-friendly aliases such as @daily. We distinguish between user-level and system-level cron job management, covering the use of the /etc/crontab and /etc/cron.d directories. The description also provides practical advice on avoiding the most common pitfalls, such as problems with the PATH environment variable and the correct handling of command output. Finally, we will introduce the role of Anacron, which ensures reliable execution of tasks on machines that are not constantly running.

How to automatically clean PHP session files left in the tmp directories of web accounts in an ISPConfig server environment

botond published March 2021, 03, Thu - 04:11 time
How to Automatically Clean PHP Session Files Left in Web Account Tmp Directories in an ISPConfig Server Environment | Linux portal
PHP sessions are global variables that transmit data stored during web visits across multiple pages, i.e., they are not lost when moving from one page to another. PHP accomplishes this by assigning unique IDs to visits (sessions) and creating files in the server-side file structure associated with those IDs in which it stores the data required for the session. The system places these files in a specific directory, usually tmp, which is normally deleted by the garbage collector after a specified time. However, the situation is sometimes not so obvious. This is because if the PHP environment on the server changes, the garbage collector may not be able to delete these obsolete, unnecessary session files. In this description, we will look at how we can use our own solution to ensure that these session files are deleted when the default cleaning system cannot remove them.

Upgrading your Drupal 9 base system in two ways

botond published March 2021, 02, Thu - 25:23 time
Upgrading the Drupal 9 base system in two ways Linux portal
There have been several base system updates for Drupal 9 CMS in recent weeks, so it's worth reviewing its update mechanism as before for the Drupal 8 update. In this description, I'm going to update the Drupal 10 website installed on the Debian 9 (Buster) perfect server from 9.1.2 to 9.1.4, so here we now jump to several versions at once. There are two ways to do this: first with a composer, and then look at the manual update.

How to update our hold packages using the APT package manager

botond published 2020/01/31, p - 20:22 time
How to Update Retained Packages with APT Package Manager Linux Portal
When updating our packages, the APT package manager may hold some pieces. This is mostly because a particular program sometimes goes through changes that change the package dependency of the base software. In this case, you would need additional new packages, sometimes ones that require the replacement of other packages. Thus, in some cases, the normal-mode package update does not perform an update to such software, but APT leaves the matter to the user. In this brief description, let’s look at an example of how to update our packages withheld in this way.

Upgrading the Drupal base system to 8.8

botond published Jan. 2019, 12, 18:15 p.m. time
Upgrading Drupal Base System to 8.8 Linux Portal
On December 2019, 4, Drupal released its currently latest base system, 8.8.0. We’ve talked about how to easily upgrade the Drupal base system before, but more has changed in this release, so we need to get a little deeper into things. So in this description we will look at how to upgrade our Drupal base system from 8.7.10 to 8.8.0.

How to move files from our databases to another partition or hard drive

botond published 2019/04/30, k - 17:36 time
Move database files to another partition Linux Portal
When running websites, the size of the databases may reach our free space on the partition, or we may want to migrate our databases to an SSD drive, for example, for performance optimization purposes. Whatever the reason for this, we can learn from this description how to migrate binaries containing databases to another partition or drive.
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