dbfdump: 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/dbfdump - from package: shapelib

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

On Debian possible default full paths are:

/usr/bin/dbfdump - from package: shapelib

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

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