texifyvhdl: 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/texifyvhdl - from package: texify

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

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