actsyncd: 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/lib/news/bin/actsyncd - from package: inn2
/usr/lib/news/bin/actsyncd - from package: inn

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

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