sarg-reports: 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/sbin/sarg-reports - from package: sarg

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

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