expresso: 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/expresso - from package: expresso
/usr/lib/node_modules/expresso/bin/expresso - from package: expresso

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

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