fileshareset: 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/fileshareset - from package: kdelibs3

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

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