wreplace: 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/wreplace - from package: wily

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

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