cadaver: 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/cadaver - from package: cadaver

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

On Debian possible default full paths are:

/usr/bin/cadaver - from package: cadaver

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

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