crypt: 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/crypt - from package: mcrypt

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

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