ebhtcheck: 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 Debian possible default full paths are:

/usr/sbin/ebhtcheck - from package: ebhttpd

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

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