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How to restart systemd without rebooting Linux when critical libraries installed

Posted: 27 Mar 2021 03:28 AM PDT

Whenever we update a critical library such as OpenSSL, we need to restart any daemons that use the library. Systemd with PID 1 itself also uses OpenSSL. How do you restart the systemd daemon without rebooting Linux and other services such as Nginx, SSHD, Firewalld? Here are some tips.

The post How to restart systemd without rebooting Linux when critical libraries installed appeared first on nixCraft.

How to configure and install WiFi driver for Broadcom b43 BCM43228 on Fedora Linux

Posted: 27 Mar 2021 02:25 AM PDT


{Updated} This page explains how to enable and install Broadcom b43 driver under a Fedora Linux v29/30/31/32/33/34. The driver (broadcom-wl and kmod-wl) works with the many Wireless chipsets from Broadcom.

The post How to configure and install WiFi driver for Broadcom b43 BCM43228 on Fedora Linux appeared first on nixCraft.

Bash get exit code of command on a Linux / Unix

Posted: 26 Mar 2021 11:56 AM PDT


{Updated} I am a new Linux system user. How do I get the exit code of a command? How do I get the exit code or status of Linux or Unix shell command and store it into a shell variable?

The post Bash get exit code of command on a Linux / Unix appeared first on nixCraft.