twiglet: 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/twiglet - from package: vtgrab

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

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