xfsinfo: 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/xfsinfo - from package: x11-xfs-utils

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

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