euktotex: 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/euktotex - from package: eukleides

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