eficompress: 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/eficompress - from package: vboot-utils

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

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