webcamd-setup: 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/webcamd-setup - from package: webcamd

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