texifyidl: 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/texifyidl - from package: texify

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

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