heat-api: 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/heat-api - from package: heat-api

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

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