hct: 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/hct - from package: hct

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

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