physe: 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 CentOS possible default full paths are:

/usr/bin/physe - from package: texlive

You may install the required package with command yum install {package}

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