[This short page is based on a publication which can be found at deNoo's Blog
When updating multiple eclipse installations in a local network it comes handy if you have a local mirror of the update sites that your developer's are interested in. The originally described method by 'deNoo' was focused on Windows. Please find below an adaption to Unix/Mac OS X based on bash scripts. To make it working for you. Configure the variables MIRROR_PATH, ECLIPSE_BASE, EQUINOX_LAUNCHER and HTTP_PROXY considering your local setup.
#!/bin/bash
#===============================================================================
# File: miror-update-sites.sh
# description: mirrors the listed update sites for eclipse to a local directory
#-------------------------------------------------------------------------------
# settings: tab width = 4 spaces
#-------------------------------------------------------------------------------
# Copyright: Copyright Balanced Solutions, 2010-19
#===============================================================================
SCRIPT_DIR=`dirname ${0}`
#====== Settings ===============================================================
#------ Local Mirror -----------------------------------------------------------
MIRROR_PATH="update-site-mirrors"
#------ HTTP -------------------------------------------------------------------
# HTTP_PROXY="-Dhttp.proxyHost=yourProxy -Dhttp.proxyPort=yourProxyPort"
HTTP_PROXY=
#------ UPDATE MANAGER ---------------------------------------------------------
ECLIPSE_BASE="eclipse-jee-2018-09"
ECLIPSE_BIN="Eclipse.app/Contents/MacOS/eclipse -nosplash"
EQUINOX_LAUNCHER="org.eclipse.equinox.launcher_1.5.100.v20180827-1352"
UPDATE_MANAGER_ARTIFACTS_CLASS="org.eclipse.equinox.p2.artifact.repository.mirrorApplication"
UPDATE_MANAGER_METADATA_CLASS="org.eclipse.equinox.p2.metadata.repository.mirrorApplication"
UPDATA_MANAGER_ARGUMENTS=""
#=== function to mirror a site =================================================
function mirror_site() {
local FROM_SITE=$1
local MIRROR_URL="http://server/eclipse-update-site-mirrors/$2"
local TO_PATH="${MIRROR_PATH}/$2"
${ECLIPSE_BASE}/${ECLIPSE_BIN} -application ${UPDATE_MANAGER_ARTIFACTS_CLASS} ${UPDATA_MANAGER_ARGUMENTS} -source ${FROM_SITE} -destination ${TO_PATH}
${ECLIPSE_BASE}/${ECLIPSE_BIN} -application ${UPDATE_MANAGER_METADATA_CLASS} ${UPDATA_MANAGER_ARGUMENTS} -source ${FROM_SITE} -destination ${TO_PATH}
}
#=== 'main' ====================================================================
mirror_site http://log4e.jayefem.de/update "log4e"
#============================ E N D - O F - F I L E ============================
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