autosketches4: 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/autosketches4 - from package: ladr4-apps

You may install the required package with command apt-get install {package}
Error in other languages:
autosketches4: bevel nie gevind nie
autosketches4: comandă negăsită
autosketches4: comando não encontrado
autosketches4: commande introuvable
autosketches4: command not found
autosketches4: käsku ei ole
autosketches4: không tìm thấy lệnh
autosketches4: komanda nerasta
autosketches4: Kommando nicht gefunden.
autosketches4: kommandot finns inte
autosketches4: komut yok
autosketches4: nie znaleziono polecenia
autosketches4: níor aimsíodh an t-ordú
autosketches4: no se encontró la orden
autosketches4: no s'ha trobat l'ordre
autosketches4: opdracht niet gevonden
autosketches4: parancs nem található
autosketches4: perintah tidak ditemukan
autosketches4: príkaz nenájdený
autosketches4: příkaz nenalezen
autosketches4: команда не найдена
autosketches4: командата не е открита
autosketches4: 命令找不到
autosketches4: コマンドが見つかりません