epstool: 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/epstool - from package: epstool

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

On Debian possible default full paths are:

/usr/bin/epstool - from package: epstool

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

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