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March 11, 2024 | by Arround The Web

Python Regex Examples

Comprehensive guide on the purpose of the most commonly used metacharacters, ranges, and Python built-in functions to search, replace, and split the strings.

March 11, 2024 | by Arround The Web

Add Days to Date in SQL

Guide on the methods and techniques that you can use to add days to a given date using various SQL databases such as MySQL, PostgreSQL, SQL Server, and Oracle.

March 11, 2024 | by Arround The Web

Service vs. Systemctl

The service and systemctl are two command line utilities used to manage system services and belong to two different init systems, SysV, and systemd respectively.

March 11, 2024 | by Arround The Web

Restart a Service using systemctl restart Command

To restart a service, use the systemctl command with the restart option and the service name. To list all the services use the ls /lib/system/system command.

March 11, 2024 | by Arround The Web

Restart Network Service using systemctl Command

To restart the network on Linux using the systemctl command, use sudo systemctl restart NetworkManager.

March 11, 2024 | by Arround The Web

Mount Windows Share on Linux using CIFS

To set the mount point on Linux, first create a mount point and then use the mount command with the -t cifs option.

March 11, 2024 | by Arround The Web

How to Use the DS3231 Real-Time Clock (RTC) Module with an ESP32

To connect DS3231 with ESP32, you have to use the I2C protocol. The SDA and SCL pins of RTC modules are connected to GPIO 21 and 22 of the ESP32 respectively.

March 11, 2024 | by Arround The Web

Mount Windows NTFS Drive on Linux

To mount a Windows NTFS partition on Linux, first identify it using the parted command, create a mount point and then mount the partition using the mount command.

March 11, 2024 | by Arround The Web

Linux systemctl reboot Command

The systemctl reboot command restarts the system in an organized way, since it is part of the system and is more aware of system services.

March 11, 2024 | by Arround The Web

How to View Systemctl Logs

To view logs of a unit or service after a recent boot use systemctl status unit-name command. To view detailed logs of a unit or service use the journalctl -u unit-name command.

March 11, 2024 | by Arround The Web

Linux Commands to Check Disk Partitions

The fdisk, cfdisk, sfdisk, lasblk, blkid, and df are the built-in Linux commands to check the disk partitions.

March 11, 2024 | by Arround The Web

How to Use Hashcat in Kali Linux?

Hashcat is a pre-install Kali Linux password cracking tool that permits ethical hackers to crack the password and also helps in recovering forgotten user passwords. It can crack even complex passwords in very little time.

March 11, 2024 | by Arround The Web

How to Switch Boot Targets with systemctl Command

To switch the boot target on Linux, the systemctl command is used with the set-default option and target file.

March 11, 2024 | by Arround The Web

How to Use systemctl status Command

The systemctl is a command line utility used to manage system services, while the systemctl status command is used to view the status of a unit.

March 11, 2024 | by Arround The Web

How to Use systemctl to Show Failed Units

To show failed units on Linux, the systemctl list-units –state=failed command is used. To fix the failed unit, use systemctl reset-failed command.

March 11, 2024 | by Arround The Web

How to Use systemctl Command to Enable and Disable Services

The systemctl enable is used to set the service enabled on boot, while the systemctl disable does the opposite.

March 11, 2024 | by Arround The Web

How to Set up and Program the ESP32 to Communicate with an Android Smartphone via Bluetooth

To control ESP32 from an Android phone via Bluetooth, first install the Bluetooth Serial Android application and pair your ESP32 from the phone settings.

March 11, 2024 | by Arround The Web

How to Start Docker Using systemctl Command

To start docker on Linux, the systemctl start command is used with sudo. By default, the docker services start on boot.

March 11, 2024 | by Arround The Web

How to Mask a Service using systemctl Command

A service can be masked using the systemctl mask command with the service name. A masked service is permanently disabled.

March 11, 2024 | by Arround The Web

How to List Serial Ports on Linux

There are three methods to list serial ports on Linux, through /sys/class directory, using dmesg command, or using Cutecom GUI application.