Blog - Page 6 - PQ.Hosting

Mar 02, 2026

How to Disable the sudo Password in Linux: NOPASSWD for User, Commands, and Group

The NOPASSWD directive in sudoers — disable the sudo password for a user, specific commands, or a group. Editing via visudo and sudoers.d with result verification.

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Mar 02, 2026

How to Log In as Root in Ubuntu: sudo -i, Password, SSH, and GUI Login

Logging in as root in Ubuntu via sudo -i and sudo su, setting a root password, enabling SSH access and graphical login via GDM — with a security risk explanation.

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1,846

Mar 02, 2026

How to Delete All Files in a Folder in Linux: rm, find, and rsync

rm, find with filters by extension and age, hidden files, rsync --delete for fast cleanup. How to preview before deleting and common mistakes to avoid.

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Mar 02, 2026

How to Check Temperature in Linux and Monitor It: lm-sensors, hddtemp, psensor

Monitoring CPU, disk, and GPU temperature in Linux — lm-sensors, sensors-detect, hddtemp, smartctl, sysfs, and psensor with graphs and notifications. Reference temperature values included.

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Mar 02, 2026

How to Make a File Executable in Linux: chmod and GUI

The execute flag in Linux — how to add it via chmod, numeric permissions, recursive setup with find, checking with ls -l, and the GUI method via Nautilus.

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Mar 02, 2026

How to Install Cursor Themes in Linux: GNOME, KDE, and Xfce

Installing cursor themes in Linux from a repository and manually. How to apply a theme in GNOME, KDE Plasma, and Xfce — with commands and solutions to common problems.

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Feb 26, 2026

How to Change Password in Ubuntu: Own Account, Another User, and Root

The passwd command, changing root password, complexity policies via pwquality, expiration via chage, locking accounts, and resetting a forgotten password via recovery mode.

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Feb 26, 2026

Error 413 Request Entity Too Large: What It Means and How to Fix It

Error 413 occurs when an uploaded file exceeds the server limit. How to identify the source and raise the limit in Nginx, Apache, and PHP — with ready-to-use config examples.

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284

Feb 26, 2026

Black Screen Instead of Desktop in RDP Session: How to Fix It

Black screen on RDP connection — 6 causes and fixes: hung session, WDDM driver conflict, bitmap caching, UDP transport, and RemoteFX compression. Step-by-step guide for Windows 10 and Windows Server.

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