fixproc: 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/fixproc - from package: snmp

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

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