KateDJ: 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 CentOS possible default full paths are:

/usr/bin/KateDJ - from package: libkate-utils

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/KateDJ - from package: libkate-tools

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

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