hbf2gf: 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/hbf2gf - from package: texlive-east-asian

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

On Debian possible default full paths are:

/usr/bin/hbf2gf - from package: latex-cjk-common

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

Error in other languages:
hbf2gf: bevel nie gevind nie
hbf2gf: comandă negăsită
hbf2gf: comando não encontrado
hbf2gf: commande introuvable
hbf2gf: command not found
hbf2gf: käsku ei ole
hbf2gf: không tìm thấy lệnh
hbf2gf: komanda nerasta
hbf2gf: Kommando nicht gefunden.
hbf2gf: kommandot finns inte
hbf2gf: komut yok
hbf2gf: nie znaleziono polecenia
hbf2gf: níor aimsíodh an t-ordú
hbf2gf: no se encontró la orden
hbf2gf: no s'ha trobat l'ordre
hbf2gf: opdracht niet gevonden
hbf2gf: parancs nem található
hbf2gf: perintah tidak ditemukan
hbf2gf: príkaz nenájdený
hbf2gf: příkaz nenalezen
hbf2gf: команда не найдена
hbf2gf: командата не е открита
hbf2gf: 命令找不到
hbf2gf: コマンドが見つかりません