texifyB: command not found

Have You tried accessing the binary with the full path?

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/texifyB - from package: texify

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