epwutil-squeeze: 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/epwutil-squeeze - from package: epwutil

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