locate.findutils: command not found

Have You tried accessing the binary with the full path?

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/locate.findutils - from package: locate

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