sendbatch: 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/sendbatch - from package: inn

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

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