htls: 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/htls - from package: gridsite-clients

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

On Debian possible default full paths are:

/usr/bin/htls - from package: gridsite-clients

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

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