split-logfile: 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

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/split-logfile - from package: apache2-utils

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