lzless: 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/lzless - from package: xz-lzma-compat

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

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