band2eps: 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/band2eps - from package: abinit

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

Error in other languages:
band2eps: bevel nie gevind nie
band2eps: comandă negăsită
band2eps: comando não encontrado
band2eps: commande introuvable
band2eps: command not found
band2eps: käsku ei ole
band2eps: không tìm thấy lệnh
band2eps: komanda nerasta
band2eps: Kommando nicht gefunden.
band2eps: kommandot finns inte
band2eps: komut yok
band2eps: nie znaleziono polecenia
band2eps: níor aimsíodh an t-ordú
band2eps: no se encontró la orden
band2eps: no s'ha trobat l'ordre
band2eps: opdracht niet gevonden
band2eps: parancs nem található
band2eps: perintah tidak ditemukan
band2eps: príkaz nenájdený
band2eps: příkaz nenalezen
band2eps: команда не найдена
band2eps: командата не е открита
band2eps: 命令找不到
band2eps: コマンドが見つかりません