pssh:tldr:d9660

pssh: Run a command and save the output to separate files.

pssh

$ pssh -H ${host1} -H ${host2} -o ${path-to-output_dir} ${hostname -i}

try on your machine

The command you provided is using the tool pssh to execute a command on multiple hosts simultaneously. Here is the breakdown of the command:

pssh: This is the command-line tool for Parallel SSH, which allows you to execute commands on multiple remote hosts in parallel.
-H ${host1} -H ${host2}: These options specify the target hosts on which the command will be executed. ${host1} and ${host2} are placeholders for the actual hostnames or IP addresses of the target hosts. You can provide multiple -H options to specify more hosts.
-o ${path-to-output_dir}: This option specifies the directory where the output of the command will be stored. ${path-to-output_dir} is a placeholder for the actual path to the output directory. Make sure the directory exists before running the command.
${hostname -i}: This is the command that will be executed on each target host. ${hostname -i} is a placeholder for the actual command you want to run. In this case, it is using the hostname command with the -i option to retrieve the IP address of the host. The output of this command will be stored in the specified output directory.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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