snmpdelta: 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 CentOS possible default full paths are:

/usr/bin/snmpdelta - 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/snmpdelta - from package: snmp

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