fftwl-wisdom: 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/fftwl-wisdom - from package: fftw

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

On Debian possible default full paths are:

/usr/bin/fftwl-wisdom - from package: libfftw3-bin

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

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