simfqt-config: 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/simfqt-config - from package: simfqt-devel

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

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