wzip: 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/wzip - from package: wzip

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

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