paster: 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/paster - from package: python-paste-script

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

On Debian possible default full paths are:

/usr/bin/paster - from package: python-pastescript

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

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