To install pssh (parallel ssh) program on Debian or Ubuntu Linux, enter:
$ sudo apt install pssh
Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: pssh 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 33.2 kB of archives. After this operation, 143 kB of additional disk space will be used. Get:1 http://httpredir.debian.org/debian/ jessie/main pssh all 2.3.1-1 [33.2 kB] Fetched 33.2 kB in 16s (2022 B/s) debconf: delaying package configuration, since apt-utils is not installed Selecting previously unselected package pssh. (Reading database ... 61621 files and directories currently installed.) Preparing to unpack .../archives/pssh_2.3.1-1_all.deb ... Unpacking pssh (2.3.1-1) ... Setting up pssh (2.3.1-1) ...