sucrack: 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/sucrack - from package: sucrack

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

On Debian possible default full paths are:

/usr/bin/sucrack - from package: sucrack

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

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