save2aecg: 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/save2aecg - from package: biosig-tools

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

Error in other languages:
save2aecg: bevel nie gevind nie
save2aecg: comandă negăsită
save2aecg: comando não encontrado
save2aecg: commande introuvable
save2aecg: command not found
save2aecg: käsku ei ole
save2aecg: không tìm thấy lệnh
save2aecg: komanda nerasta
save2aecg: Kommando nicht gefunden.
save2aecg: kommandot finns inte
save2aecg: komut yok
save2aecg: nie znaleziono polecenia
save2aecg: níor aimsíodh an t-ordú
save2aecg: no se encontró la orden
save2aecg: no s'ha trobat l'ordre
save2aecg: opdracht niet gevonden
save2aecg: parancs nem található
save2aecg: perintah tidak ditemukan
save2aecg: príkaz nenájdený
save2aecg: příkaz nenalezen
save2aecg: команда не найдена
save2aecg: командата не е открита
save2aecg: 命令找不到
save2aecg: コマンドが見つかりません