espresso: command not found

Have You tried accessing the binary with the full path?

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/espresso - from package: espresso-ab

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