cryptcat: 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/cryptcat - from package: cryptcat

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

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