compface: 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/compface - from package: compface

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

On Debian possible default full paths are:

/usr/bin/compface - from package: compface

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

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