matchpathcon: 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:

/sbin/matchpathcon - from package: libselinux
/usr/sbin/matchpathcon - from package: libselinux-utils

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

On Debian possible default full paths are:

/usr/sbin/matchpathcon - from package: selinux-utils

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

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