shpdump: 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/shpdump - from package: shapelib

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

On Debian possible default full paths are:

/usr/bin/shpdump - from package: shapelib

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

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