qtrename140: 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/lib64/qt-3.3/bin/qtrename140 - from package: qt3-devel
/usr/lib/qt-3.3/bin/qtrename140 - from package: qt3-devel

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

Error in other languages:
qtrename140: bevel nie gevind nie
qtrename140: comandă negăsită
qtrename140: comando não encontrado
qtrename140: commande introuvable
qtrename140: command not found
qtrename140: käsku ei ole
qtrename140: không tìm thấy lệnh
qtrename140: komanda nerasta
qtrename140: Kommando nicht gefunden.
qtrename140: kommandot finns inte
qtrename140: komut yok
qtrename140: nie znaleziono polecenia
qtrename140: níor aimsíodh an t-ordú
qtrename140: no se encontró la orden
qtrename140: no s'ha trobat l'ordre
qtrename140: opdracht niet gevonden
qtrename140: parancs nem található
qtrename140: perintah tidak ditemukan
qtrename140: príkaz nenájdený
qtrename140: příkaz nenalezen
qtrename140: команда не найдена
qtrename140: командата не е открита
qtrename140: 命令找不到
qtrename140: コマンドが見つかりません