Script to install one or more jenkins plugins including dependencies while jenkins is offline

install_jenkins_plugin.sh

#!/bin/bash

set -e

if [ $# -eq 0 ]; then
  echo "USAGE: $0 plugin1 plugin2 ..."
  exit 1
fi

plugin_dir=/var/lib/jenkins/plugins
file_owner=jenkins.jenkins

mkdir -p /var/lib/jenkins/plugins

installPlugin() {
  if [ -f ${plugin_dir}/${1}.hpi -o -f ${plugin_dir}/${1}.jpi ]; then
    if [ "$2" == "1" ]; then
      return 1
    fi
    echo "Skipped: $1 (already installed)"
    return 0
  else
    echo "Installing: $1"
    curl -L --silent --output ${plugin_dir}/${1}.hpi  https://updates.jenkins-ci.org/latest/${1}.hpi
    return 0
  fi
}

for plugin in $*
do
    installPlugin "$plugin"
done

changed=1
maxloops=100

while [ "$changed"  == "1" ]; do
  echo "Check for missing dependecies ..."
  if  [ $maxloops -lt 1 ] ; then
    echo "Max loop count reached - probably a bug in this script: $0"
    exit 1
  fi
  ((maxloops--))
  changed=0
  for f in ${plugin_dir}/*.hpi ; do
    # without optionals
    #deps=$( unzip -p ${f} META-INF/MANIFEST.MF | tr -d '\r' | sed -e ':a;N;$!ba;s/\n //g' | grep -e "^Plugin-Dependencies: " | awk '{ print $2 }' | tr ',' '\n' | grep -v "resolution:=optional" | awk -F ':' '{ print $1 }' | tr '\n' ' ' )
    # with optionals
    deps=$( unzip -p ${f} META-INF/MANIFEST.MF | tr -d '\r' | sed -e ':a;N;$!ba;s/\n //g' | grep -e "^Plugin-Dependencies: " | awk '{ print $2 }' | tr ',' '\n' | awk -F ':' '{ print $1 }' | tr '\n' ' ' )
    for plugin in $deps; do
      installPlugin "$plugin" 1 && changed=1
    done
  done
done

echo "fixing permissions"

chown ${file_owner} ${plugin_dir} -R

echo "all done"

Awesome,
is there any script to check plugins that are installed

There are multiple ways to list your Jenkins Plugins:

Way 1: Script console(groovy code):
go to http:<Jenkins_URl>/script
Run below command:

Jenkins.instance.pluginManager.plugins.each{
  plugin ->
    println ("${plugin.getShortName()}")
}

Way 2: Command CLI
Download command-CLI jar from : http://<Jenkins_URL>/jnlpJars/jenkins-cli.jar
Run below command:
java -jar jenkins-cli.jar -s http://<JENKINS_URL>/ list-plugins --username "<Jenkins_USERNAME>" --password "<Jenkins_Password>"

Way 3: Jenkins Python API

import jenkins
import json
server = jenkins.Jenkins('<jenkinsurl>', username='<Jenkins_user>', password='<Jenkins_User_password>')
all_plugins_info=server.get_plugins_info()
for each_plugin in all_plugins_info:
    print each_plugin['shortName']

if you are using a file that contains the name of a plugin on each line you can use this command with the above script
./install_jenkins_plugin.sh $(echo $(cat plugins.txt))

@noroutine

For whoever searches for this, make sure you try jenkins rest api first

	curl -X POST \
		--data "<jenkins><install plugin='${name}@latest' /></jenkins>" \
		--header 'Content-Type: text/xml' \
		http://localhost:8080/pluginManager/installNecessaryPlugins

You should update your example to include the Crumb Issuer Header as well.

• https://support.cloudbees.com/hc/en-us/articles/219257077-CSRF-Protection-Explained

Jenkins' docker build has a script for this: https://github.com/jenkinsci/docker/blob/master/install-plugins.sh