pocl-standalone: 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/pocl-standalone - from package: libpocl1-common

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

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