convickt: command not found

Have You tried accessing the binary with the full path?

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/convickt - from package: intercal

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