resume: 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/lib/klibc/bin/resume - from package: klibc-utils

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