trs: 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/trs - from package: konwert

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

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