phasex: 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/phasex - from package: phasex

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

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