pdsh.bin: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/pdsh.bin - from package: pdsh

You may install the required package with command apt-get install {package}

Error in other languages:
pdsh.bin: bevel nie gevind nie
pdsh.bin: comandă negăsită
pdsh.bin: comando não encontrado
pdsh.bin: commande introuvable
pdsh.bin: command not found
pdsh.bin: käsku ei ole
pdsh.bin: không tìm thấy lệnh
pdsh.bin: komanda nerasta
pdsh.bin: Kommando nicht gefunden.
pdsh.bin: kommandot finns inte
pdsh.bin: komut yok
pdsh.bin: nie znaleziono polecenia
pdsh.bin: níor aimsíodh an t-ordú
pdsh.bin: no se encontró la orden
pdsh.bin: no s'ha trobat l'ordre
pdsh.bin: opdracht niet gevonden
pdsh.bin: parancs nem található
pdsh.bin: perintah tidak ditemukan
pdsh.bin: príkaz nenájdený
pdsh.bin: příkaz nenalezen
pdsh.bin: команда не найдена
pdsh.bin: командата не е открита
pdsh.bin: 命令找不到
pdsh.bin: コマンドが見つかりません