CODEWITHSUNDEEP
bash
Fabian Buentello
Fabian Buentello

Reputation: 532

Run source in bash execution

Quick run down of what I'm doing, I'm making python development environments on my computer using virtualenv. I'm not one to remember all these commands, so I like to build simple(noob-ish) script that will help me.

Problem

As you see on step 2 in the Basic Usage section of the documentation. I need to run a command:

$ source venv/bin/activate

This activates my python environment. So I've tried a mixture of functions and eval. As mentioned, I am a bit of a noob when it comes to bash scripts.

My Code

File: fpyenv

#!/bin/bash
# $ cd ~/scripts/
# $ chmod u+x <filename>.sh

activateSrc(){

    eval '$(source "${1}"/bin/activate)'

}
if [[ $1 == '' ]];
    then
    printf "ERROR: Missing Filename\n"
else
    printf "Creating Virtual Environment $1\n"
    # This creates the environment
    virtualenv $1  
    printf "Do you want to activate $1 as your virtual environment?(y/n)\n"
    # Get answer from user
    read answer 
    if [[ $answer != 'y' ]];
        # Said No 
        then 
        printf "Did not set $1 as your virtual environment\n"
    else
        # Said Yes
        activateSrc $1
        printf "Set $1 as your virtual environment\n"
    fi
fi

This is what it should look like:

Step 1

myComputer $ fpyenv venv

returns

Creating Virtual Environment venv
Do you want to activate venv as your virtual environment?(y/n)

Step 2(user inputs y/n)

y

returns

Set venv as your virtual environment
(venv)myComputer $

But what I'm getting is:

Set venv as your virtual environment
myComputer $

So it doesn't run the source venv/bin/activate. Does anyone know what I'm doing wrong? I've looked through many answers, but given that source is commonly used in a different way in bash scripts, the answers I'm getting are no help. Thank you in advance!

FIX:

Change activateSrc to:

activateSrc(){

    source $1/bin/activate

}

And execute script like this:

myComputer $ . fpyenv venv

Upvotes: 0

Views: 56

Answers (1)

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 799490

It runs source just as written. The thing is that you need to source this new script as well, otherwise it just runs in a subshell and any changes made by the sourced script are lost when the subshell exits.

Upvotes: 2

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