katalyzer: 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/katalyzer - from package: libkate-utils

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

On Debian possible default full paths are:

/usr/bin/katalyzer - from package: libkate-tools

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

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