aafire: 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/aafire - from package: aalib

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

On Debian possible default full paths are:

/usr/bin/aafire - from package: libaa-bin

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

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