jps: 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/lib/debug/usr/lib/jvm/java-7-openjdk-amd64/bin/jps - from package: openjdk-7-dbg
/usr/lib/jvm/java-7-openjdk-amd64/bin/jps - from package: openjdk-7-jdk

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

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