racy: 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/racy - from package: tau-racy
/usr/lib/tau/x86_64/bin/racy - from package: tau-racy

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

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