proslicerl: 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/proslicerl - from package: vpb-utils

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

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