ksplashx: 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/ksplashx - from package: kdebase-workspace

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

On Debian possible default full paths are:

/usr/bin/ksplashx - from package: kde-workspace-bin

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

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