notes/snippet/shell/test_load.sh

#!/bin/bash


function test_and_source() {
    filepath=$1
    if [[ -f $filepath ]]; then
        source $filepath
        return 0
    fi
    return 1
}

$(test_and_source "/usr/bin/virtualenvwrapper.sh")
if [ $? -eq 0 ]; then
    echo 'source success'
else
    echo 'source fails'
fi