texifyperl: 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/texifyperl - from package: texify

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

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