htconfig: 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
/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 Debian possible default full paths are:

/usr/bin/htconfig - from package: global

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