Bash shell腳本：我如何退出並重新啓動腳本？

Question

我使用shell腳本來配置我的服務器。修改.bashrc文件後，我需要退出然後重新登錄才能重新啓動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 

更新：

這是shell腳本文件遊民運行。

#!/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" 

這是我得到的輸出。仍然沒有找到命令。

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

==>在我修改.bashrc文件，我需要退出然後重新登錄，以重新啓動外殼。

無需重新啓動shell。如果您希望立即在當前會話中反映更改，則可以使用以下命令來完成此操作。

source ~/.bashrc

或

. ~/.bashrc

這樣做，你將加載當前新設置您的會話。所以你不需要重新登錄。

請找到一個正常工作的示例代碼。

#!/usr/bin/sh 
echo "alias mycmd='ls'" >> ~/.bashrc 
source ~/.bashrc 
mycmd 

解決您的問題 - >

請創建用戶 '流浪漢' 密碼的ssh。請檢查文檔以創建無密碼的ssh here。

然後把你的運行文件命令如下。

ssh vagrant@localhost "alias mycmd='echo $HOME';/mycmd" 

這裏用「/」之前mycmd是強制性的，否則「mycmd」將由當前的shell才執行，你會得到command not found錯誤。