texifypromela: 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/texifypromela - from package: texify

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

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