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

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