jade.js: 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/lib/node_modules/jade/bin/jade.js - from package: nodejs-jade

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

On Debian possible default full paths are:

/usr/lib/nodejs/jade/bin/jade.js - from package: node-jade

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

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