texifyscheme: 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/texifyscheme - from package: texify

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

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