fm2ps: 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

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/fm2ps - from package: sdf

You may install the required package with command apt-get install {package}
Error in other languages:
fm2ps: bevel nie gevind nie
fm2ps: comandă negăsită
fm2ps: comando não encontrado
fm2ps: commande introuvable
fm2ps: command not found
fm2ps: käsku ei ole
fm2ps: không tìm thấy lệnh
fm2ps: komanda nerasta
fm2ps: Kommando nicht gefunden.
fm2ps: kommandot finns inte
fm2ps: komut yok
fm2ps: nie znaleziono polecenia
fm2ps: níor aimsíodh an t-ordú
fm2ps: no se encontró la orden
fm2ps: no s'ha trobat l'ordre
fm2ps: opdracht niet gevonden
fm2ps: parancs nem található
fm2ps: perintah tidak ditemukan
fm2ps: príkaz nenájdený
fm2ps: příkaz nenalezen
fm2ps: команда не найдена
fm2ps: командата не е открита
fm2ps: 命令找不到
fm2ps: コマンドが見つかりません