proalign: 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/proalign - from package: proalign

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

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