xrootdfs: 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/xrootdfs - from package: xrootd-fuse

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

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