kfilemetadatareader: 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/kfilemetadatareader - from package: kdelibs-bin

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

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