ipetoipe: 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/ipetoipe - from package: ipe

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

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