pushpin: 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/pushpin - from package: pushpin

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

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