Bash shell script: how do I exit and restart the script? - bash

Question

I use a shell script to provision my server. After I modify the .bashrc file, i need to exit then log back in to restart the shell.
su vagrant <<'EOF'
echo "export WORKON_HOME=$HOME/.virtualenvs" >> ~/.bashrc
echo "export PROJECT_HOME=/var/www" >> ~/.bashrc
echo "alias mkvirtualenv='mkvirtualenv --no-site-packages'" >> ~/.bashrc
echo "source /usr/local/bin/virtualenvwrapper.sh" >> ~/.bashrc
source ~/.bashrc
// this is where I need help, i need to exit the shell and relogin. then run mkvirutalenv command.
mkvirtualenv test1
EOF
Update:
this is the shell script file vagrant will run.
#!/usr/bin/env bash
if [ -f "/var/vagrant_provision" ]; then
exit 0
fi
echo "Installing Flask environment and setting it up.."
echo "------------------------------------------------"
apt-get update >/dev/null 2>&1
echo "1. update is done"
#apt-get upgrade -y >/dev/null 2>&1
echo "2. upgrade is done -- skipped for dev"
rm -rf /var/www
ln -fs /vagrant /var/www
echo "3. Symbolic link is created"
apt-get install -y build-essential python-dev >/dev/null 2>&1
apt-get install -y curl >/dev/null 2>&1
echo "4. curl is installed"
apt-get install -y python-pip >/dev/null 2>&1
echo "5. pip is installed"
pip install virtualenv virtualenvwrapper >/dev/null 2>&1
echo "6. virtualenv and virtualenvwrapper are installed"
su vagrant <<'EOF'
echo "export WORKON_HOME=$HOME/.virtualenvs" >> ~/.bashrc
echo "export PROJECT_HOME=/var/www" >> ~/.bashrc
echo "source /usr/local/bin/virtualenvwrapper.sh" >> ~/.bashrc
echo "alias mkv='mkvirtualenv --no-site-packages'" >> ~/.bashrc
echo "alias mycmd='ls'" >> ~/.bashrc
source ~/.bashrc
mycmd
mkv test1
EOF
echo "7. add environment variables to .bashrc"
echo "8. source .bashrc"
echo "9. test1 environment is created"
touch /var/vagrant_provision
echo "------------------------------------------------"
echo "Installation is done"
this is the output I got. still getting command not found.
Installing Flask environment and setting it up..
------------------------------------------------
1. update is done
2. upgrade is done -- skipped for dev
3. Symbolic link is created
4. curl is installed
5. pip is installed
6. virtualenv and virtualenvwrapper are installed
bash: line 8: mycmd: command not found
bash: line 9: mkv: command not found
7. add environment variables to .bashrc
8. source .bashrc
9. test1 environment is created
------------------------------------------------
Installation is done

Answer 1

==> After I modify the .bashrc file, i need to exit then log back in to restart the shell.
No need to restart the shell. If you want changes to get reflected in current session immediately then you can do this by using below commands.
source ~/.bashrc
or
. ~/.bashrc
By doing this you will load current new settings into your session. So you need not to re-login.
Please find one sample code which work properly.
#!/usr/bin/sh
echo "alias mycmd='ls'" >> ~/.bashrc
source ~/.bashrc
mycmd
To fix your problem -->
Please create passwordless ssh for user 'vagrant'. Please check the documantation to create passwordless ssh here.
Then put your run document commands like below.
ssh vagrant#localhost "alias mycmd='echo $HOME';/mycmd"
here using '/' before mycmd is mandatory otherwise 'mycmd' will be executed by current shell only and you will get command not found error.