genfontmap.ps: 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 CentOS possible default full paths are:

/var/spool/hylafax/bin/genfontmap.ps - from package: hylafax+-client

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