fantaip: command not found

Have You tried accessing the binary with the full path?

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/fantaip - from package: unicornscan

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