c2ph: 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/c2ph - from package: perl

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

On Debian possible default full paths are:

/usr/bin/c2ph - from package: perl

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

Error in other languages:
c2ph: bevel nie gevind nie
c2ph: comandă negăsită
c2ph: comando não encontrado
c2ph: commande introuvable
c2ph: command not found
c2ph: käsku ei ole
c2ph: không tìm thấy lệnh
c2ph: komanda nerasta
c2ph: Kommando nicht gefunden.
c2ph: kommandot finns inte
c2ph: komut yok
c2ph: nie znaleziono polecenia
c2ph: níor aimsíodh an t-ordú
c2ph: no se encontró la orden
c2ph: no s'ha trobat l'ordre
c2ph: opdracht niet gevonden
c2ph: parancs nem található
c2ph: perintah tidak ditemukan
c2ph: príkaz nenájdený
c2ph: příkaz nenalezen
c2ph: команда не найдена
c2ph: командата не е открита
c2ph: 命令找不到
c2ph: コマンドが見つかりません