redata: 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/redata - from package: emboss

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