• Status: Solved
  • Priority: High
  • Security: Private
  • Views: 79
  • Last Modified:

help me understand the shell script

help me to understand the below lines in below shell script..

Why we need to use virtualenv "$ANSIBLE_ROOT" .... and what is the use of virtualenv here ....

and how activate and deactivate worked ...i am bit confused how activate and deactivate keywords worked here..
. "$ANSIBLE_ROOT/bin/activate"
deactivate


and also how pip works with -i option...i.e. below

pip install docker-compose==1.15.0 -i https://artifactory.global.raju.com/artifactory/api/pypi/pypi-release/simple


#!/usr/bin/env sh

ANSIBLE_ROOT=${ANSIBLE_ROOT:-~/ansible}
scl enable python27 bash <<!
set -e
export https_proxy=https://10.198.140.122:8080
if [ ! -d "$ANSIBLE_ROOT/bin" ]
then
    virtualenv "$ANSIBLE_ROOT"
    . "$ANSIBLE_ROOT/bin/activate"
    echo "Installing latest version of ansible"
    pip install ansible -i https://artifactory.global.raju.com/artif4actory/api/pypi/pypi-release/simple
    pip install docker-py -i https://artifactory.global.raju.com/artifactory/api/pypi/pypi-release/simple
    pip install docker-compose==1.15.0 -i https://artifactory.global.raju.com/artifactory/api/pypi/pypi-release/simple
    deactivate
fi
!

Open in new window

0
BharathKumarRaju DasaraRaju
Asked:
BharathKumarRaju DasaraRaju
1 Solution
 
Swadhin RaySenior Technical Engineer Commented:
Never used this but " virtualenv " command is usually used to create an isolated virtual environment on any instance.
Hope this below link will help you to understand more.
Let other experts also comment on this :

https://virtualenv.pypa.io/en/stable/

Open in new window


And "i" stands for ignore the installed packages (reinstalling instead).

here is the link for getting all PIP related details:

https://pip.pypa.io/en/stable/reference/pip_install/

Open in new window

0
 
BharathKumarRaju DasaraRajuDevops EngineerAuthor Commented:
Thank you
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now