splitlog: 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
/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/splitlog - from package: wwwstat

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