dracut-catimages: 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:

/sbin/dracut-catimages - from package: dracut-tools

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

On Debian possible default full paths are:

/usr/bin/dracut-catimages - from package: dracut

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

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