ltrsift_encode: 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/ltrsift_encode - from package: ltrsift

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

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