System Management Archives

How to check whether a USB disk is connected to a Linux server?

ByEric Ma Mar 24, 2018Mar 24, 2018

I can only connect to a Linux server by SSH. How to check whether a USB disk is connected to the Linux server? 2 ways I usuaully use: Method One: Check the print out of dmesg After the USB storage is connected and detected by Linux, it may print some messages containing “[sde]” (the new…

Tutorial

Three Methods of Executing Commands on Many Nodes in Parallel via SSH on Linux

ByEric Ma Jan 3, 2016Aug 30, 2020

It is common to execute commands on many nodes/hosts via SSH for managing a cluster of Linux servers. On Linux, there are many choices for this task. Generally, to run commands on many nodes, there are two modes: serial mode and parallel mode. In serial mode, the command is executed on the node one by…