dumpsexp: 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/dumpsexp - from package: libgcrypt-devel

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

On Debian possible default full paths are:

/usr/bin/dumpsexp - from package: libgcrypt20-dev

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

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