jetpipe: 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/sbin/jetpipe - from package: ltsp-client-core

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