wsdump: 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/wsdump - from package: python-websocket-client

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

On Debian possible default full paths are:

/usr/bin/wsdump - from package: python-websocket

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

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