checkcites: 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/bin/checkcites - from package: texlive-luatex

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

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