zstreamdump: 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 CentOS possible default full paths are:

/usr/bin/zstreamdump - from package: zfs-fuse

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/sbin/zstreamdump - from package: zfs-fuse

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

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