pacpl: 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/pacpl - from package: pacpl

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

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