cacafire: 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/cacafire - from package: caca-utils

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

On Debian possible default full paths are:

/usr/bin/cacafire - from package: caca-utils

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

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