hman: 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/bin/hman - from package: man2html

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

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