rmid: 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/jvm/java-1.5.0-gcj-4.8-amd64/bin/rmid - from package: gcj-4.8-jre-headless
/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre/bin/rmid - from package: gcj-4.8-jre-headless
/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/bin/rmid - from package: gcj-4.9-jre-headless
/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre/bin/rmid - from package: gcj-4.9-jre-headless
/usr/lib/debug/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/rmid - from package: openjdk-7-dbg
/usr/lib/jvm/java-7-openjdk-amd64/bin/rmid - from package: openjdk-7-jre-headless
/usr/lib/jvm/java-7-openjdk-amd64/jre/bin/rmid - from package: openjdk-7-jre-headless

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

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