stompcat: 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/stompcat - from package: rubygem-stomp
/usr/lib/ruby/gems/1.8/gems/stomp-1.2.2/bin/stompcat - from package: rubygem-stomp

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

On Debian possible default full paths are:

/usr/bin/stompcat - from package: ruby-stomp

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

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