groffer: 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/groffer - from package: groff

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

On Debian possible default full paths are:

/usr/bin/groffer - from package: groff

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

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