ecs: 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 Debian possible default full paths are:

/usr/bin/ecs - from package: ecere-dev

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