osmpbf-outline: 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/osmpbf-outline - from package: osmpbf-bin

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

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