clojure: 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/clojure - from package: clojure

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

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