vifm-pause: 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/vifm-pause - from package: vifm

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