take-vector-screenshot: 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/take-vector-screenshot - from package: gtk-vector-screenshot

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

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