bdftops: 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/bdftops - from package: ghostscript

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

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