How to use the top command to monitor Linux processes
Posted by Alex On October 17, 2021
“top” program for showing Linux processes in real time The top program shows the program and service processes running on Linux. With top, you can see the dynamics of a running system in real time. The program displays a summary of the system information, as well as a list of processes or threads currently served […]
How to check IP history for SSH sessions
Posted by Alex On October 15, 2021
How to list IP history of SSH sessions If a Linux server has been hacked, it becomes necessary to collect information, for example, to get the time and IP addresses of the last SSH sessions. This can help not only identify the source of the danger, but also, for example, answer the question: was the […]
How to list all Cron tasks
Posted by Alex On October 15, 2021
Show all Cron jobs for all users To display every item in the cron schedule for each user, use the following command: for user in $(cut -f1 -d: /etc/passwd); do sudo crontab -u $user -l 2>/dev/null | grep -v '^#'; done Elevated privileges are required to display information about all users – otherwise, only the […]
File attributes on Linux
Posted by Alex On October 14, 2021
File attributes on Linux file systems Each file has a specific set of properties in the file system. For example, these are access permissions, owner, name, timestamps. In Linux, each file has quite a few properties, for example, access permissions are set three times (for the owner, group and all others), timestamps can also be […]
GUI program to view and delete metadata in Linux
Posted by Alex On October 14, 2021
What is metadata Metadata is additional information embedded in a file, for a photo, metadata is GPS coordinates, information about the camera, shooting settings, etc., for office documents, metadata is the author's name, the time the document was edited, the name of the organization, the editor program, etc. As it is said, metadata is information […]
Custom Google Chrome settings for each computer user
Posted by Alex On October 14, 2021
Google Chrome on Linux has a number of useful options, for example: launching a web browser in incognito mode you can specify the path to the folder where the profile data and browser cache will be stored you can select the type of password storage proxy settings Like many programs in Linux, Google Chrome supports […]
How to configure Squid proxy to work with multiple users
Posted by Alex On October 13, 2021
For example, the task is to organize the work of Squid with several users, each of which received an IP address (the same for all) and a port number (individual for each user) as proxy settings. Also, users have an individual username and password. The server has several external IP (in this case, IPv6) addresses, […]
How to Install the Latest Linux Kernels on Debian and Debian Based Distributions
Posted by Alex On September 23, 2021
Recent versions of the Linux kernel have drivers for new devices and other innovations. Unfortunately, many popular Linux distributions are in no rush to update their kernel. This tutorial will show you how easy it is, without compiling, to install any version of the Linux kernel on Debian and derived distributions, for example, Kali Linux […]
How to Install the Latest Linux Kernels on Ubuntu and Linux Mint
Posted by Alex On September 23, 2021
Recent versions of the Linux kernel have drivers for new devices and other innovations. Unfortunately, many popular Linux distributions are in no rush to update their kernel. This tutorial will show you how easy it is to install any version of the Linux kernel on Ubuntu and Linux Mint without compiling. You can choose to […]
Gmail does not receive forwarded emails (SOLVED)
Posted by Alex On September 3, 2021
Some Gmail users face the problem that the configured forwarding to the Google mailbox (Gmail) does not work, or is unstable. I faced such a problem when trying to set up forwarding from mail.ru mail to @gmail.com mail. In my case, forwarding from mail.ru was configured correctly and enabled. Moreover, it even worked for some […]