gpspipe: command not found

Have You tried accessing the binary with the full path?

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/gpspipe - from package: gpsd-clients

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