servertool: 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/jre/bin/servertool - from package: openjdk-7-dbg
/usr/lib/jvm/java-7-openjdk-amd64/bin/servertool - from package: openjdk-7-jre-headless
/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/servertool - from package: openjdk-7-jre-headless

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

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