rivet-chopbins: 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/rivet-chopbins - from package: rivet

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

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