snmpbulkwalk: 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 CentOS possible default full paths are:

/usr/bin/snmpbulkwalk - from package: net-snmp-utils

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/snmpbulkwalk - from package: snmp

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

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