handlebars: 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/handlebars - from package: nodejs-handlebars
/usr/lib/node_modules/handlebars/bin/handlebars - from package: nodejs-handlebars

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

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