quilt: 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/quilt - from package: quilt

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

On Debian possible default full paths are:

/usr/bin/quilt - from package: quilt

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

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