kaccess: 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/kaccess - from package: kdebase-workspace

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

On Debian possible default full paths are:

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

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

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