ebook-edit: 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/ebook-edit - from package: calibre

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

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