tyq: 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/tyq - from package: terminology

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

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