ctl-hlfsd: 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/sbin/ctl-hlfsd - from package: am-utils

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

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