kcare-uname: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/kcare-uname - from package: kernelcare

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