ifnames-dickey: 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/ifnames-dickey - from package: autoconf-dickey

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

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