atmsigd: 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

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/sbin/atmsigd - from package: atm-tools

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