uvcdynctrl-0.2.4: 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/uvcdynctrl-0.2.4 - from package: uvcdynctrl

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

Error in other languages:
uvcdynctrl-0.2.4: bevel nie gevind nie
uvcdynctrl-0.2.4: comandă negăsită
uvcdynctrl-0.2.4: comando não encontrado
uvcdynctrl-0.2.4: commande introuvable
uvcdynctrl-0.2.4: command not found
uvcdynctrl-0.2.4: käsku ei ole
uvcdynctrl-0.2.4: không tìm thấy lệnh
uvcdynctrl-0.2.4: komanda nerasta
uvcdynctrl-0.2.4: Kommando nicht gefunden.
uvcdynctrl-0.2.4: kommandot finns inte
uvcdynctrl-0.2.4: komut yok
uvcdynctrl-0.2.4: nie znaleziono polecenia
uvcdynctrl-0.2.4: níor aimsíodh an t-ordú
uvcdynctrl-0.2.4: no se encontró la orden
uvcdynctrl-0.2.4: no s'ha trobat l'ordre
uvcdynctrl-0.2.4: opdracht niet gevonden
uvcdynctrl-0.2.4: parancs nem található
uvcdynctrl-0.2.4: perintah tidak ditemukan
uvcdynctrl-0.2.4: príkaz nenájdený
uvcdynctrl-0.2.4: příkaz nenalezen
uvcdynctrl-0.2.4: команда не найдена
uvcdynctrl-0.2.4: командата не е открита
uvcdynctrl-0.2.4: 命令找不到
uvcdynctrl-0.2.4: コマンドが見つかりません