linux终端如何知道安装的软件版本

Question

I installed software(elastic search) in linux so i want to know the version of elastic search. I try some commands not working.

For Example:- this is Ubuntu command application_name --version

FYR: https://askubuntu.com/questions/440982/how-to-check-installed-program-version

what is the linux command? please anyone help me. what i did mistake?

Answer 1

For getting elasticsearch version you need to run: curl -XGET 'http://localhost:9200'

Output:

{
  "name" : "elasticsearch1",
  "cluster_name" : "docker-cluster",
  "cluster_uuid" : "MmOqb1d9TjmxlIlADv_Deg",
  "version" : {
     "number" : "7.4.0",
     "build_flavor" : "default",
     "build_type" : "docker",
     "build_hash" : "22e1767283e61a198cb4db791ea66e3f11ab9910",
     "build_date" : "2019-09-27T08:36:48.569419Z",
     "build_snapshot" : false,
     "lucene_version" : "8.2.0",
     "minimum_wire_compatibility_version" : "6.8.0",
     "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
 "tagline" : "You Know, for Search"
}