ipescript: 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/ipescript - from package: ipe

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