probalign: 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/probalign - from package: probalign

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

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