docheckgroups: 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/docheckgroups - from package: inn2

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

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