amqp-get: 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/amqp-get - from package: librabbitmq-tools

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

On Debian possible default full paths are:

/usr/bin/amqp-get - from package: amqp-tools

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

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