gprename: 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 Debian possible default full paths are:

/usr/bin/gprename - from package: gprename

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

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