lskat: 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/lskat - from package: kdegames

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

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