zipcloak: 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/zipcloak - from package: zip

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

On Debian possible default full paths are:

/usr/bin/zipcloak - from package: zip

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

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