lps2torx: 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

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/lps2torx - from package: mcrl2

You may install the required package with command apt-get install {package}
Error in other languages:
lps2torx: bevel nie gevind nie
lps2torx: comandă negăsită
lps2torx: comando não encontrado
lps2torx: commande introuvable
lps2torx: command not found
lps2torx: käsku ei ole
lps2torx: không tìm thấy lệnh
lps2torx: komanda nerasta
lps2torx: Kommando nicht gefunden.
lps2torx: kommandot finns inte
lps2torx: komut yok
lps2torx: nie znaleziono polecenia
lps2torx: níor aimsíodh an t-ordú
lps2torx: no se encontró la orden
lps2torx: no s'ha trobat l'ordre
lps2torx: opdracht niet gevonden
lps2torx: parancs nem található
lps2torx: perintah tidak ditemukan
lps2torx: príkaz nenájdený
lps2torx: příkaz nenalezen
lps2torx: команда не найдена
lps2torx: командата не е открита
lps2torx: 命令找不到
lps2torx: コマンドが見つかりません