fd2ps: 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/fd2ps - from package: xforms-devel

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

On Debian possible default full paths are:

/usr/bin/fd2ps - from package: libforms-bin

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

Error in other languages:
fd2ps: bevel nie gevind nie
fd2ps: comandă negăsită
fd2ps: comando não encontrado
fd2ps: commande introuvable
fd2ps: command not found
fd2ps: käsku ei ole
fd2ps: không tìm thấy lệnh
fd2ps: komanda nerasta
fd2ps: Kommando nicht gefunden.
fd2ps: kommandot finns inte
fd2ps: komut yok
fd2ps: nie znaleziono polecenia
fd2ps: níor aimsíodh an t-ordú
fd2ps: no se encontró la orden
fd2ps: no s'ha trobat l'ordre
fd2ps: opdracht niet gevonden
fd2ps: parancs nem található
fd2ps: perintah tidak ditemukan
fd2ps: príkaz nenájdený
fd2ps: příkaz nenalezen
fd2ps: команда не найдена
fd2ps: командата не е открита
fd2ps: 命令找不到
fd2ps: コマンドが見つかりません