gjslint: 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 Debian possible default full paths are:

/usr/bin/gjslint - from package: closure-linter

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

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