kmimetypefinder: 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/kmimetypefinder - from package: kdebase-runtime

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

On Debian possible default full paths are:

/usr/bin/kmimetypefinder - from package: kde-runtime

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

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