zooinspector: 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/zooinspector - from package: zookeeper

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

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