Bash Checks
echo "Using conditional statement to create a project directory and project"
# Variable section
export project_dir=$HOME/vscode # change vscode to different name to test git clone
export project=$project_dir/firstrepo # change APCSP to name of project from git clone
export project_repo="https://github.com/paravsalaniwal/firstrepo.git" # change to project of choice
cd ~ # start in home directory
# Conditional block to make a project directory
if [ ! -d $project_dir ]
then
echo "Directory $project_dir does not exists... makinng directory $project_dir"
mkdir -p $project_dir
fi
echo "Directory $project_dir exists."
# Conditional block to git clone a project from project_repo
if [ ! -d $project ]
then
echo "Directory $project does not exists... cloning $project_repo"
cd $project_dir
git clone $project_repo
cd ~
fi
echo "Directory $project exists."
Look inside Fastpages/Github page project
All computers contain files and directories. The clone brought more files from cloud to your machine. Using the bash shell you will see some commands that show and interact with files and directories.
- "ls" lists computer files in Unix and Unix-like operating systems
- "cd" offers way to navigate and change working directory
- "pwd" print working directory
- "echo" used to display line of text/string that are passed as an argument
echo "Navigate to project, then navigate to area where files were cloned"
cd $project
pwd
echo ""
echo "list top level or root of files with project pulled from github"
ls
echo ""
echo "list again with hidden files pulled from github"
ls -a # hidden files flag, many shell commands have flags
echo ""
echo "list all files in long format"
ls -al # all files and long listing
echo "Look for posts"
export posts=$project/_posts # _posts inside project
cd $posts # this should exist per fastpages
pwd # present working directory
ls -l # list posts
echo "Look for notebooks"
export notebooks=$project/_notebooks # _notebooks is inside project
cd $notebooks # this should exist per fastpages
pwd # present working directory
ls -l # list notebooks
echo "Look for images in notebooks, print working directory, list files"
cd $notebooks/images # this should exist per fastpages
pwd
ls -l
Look inside a Markdown File
"cat" reads data from the file and gives its content as output
echo "Navigate to project, then navigate to area wwhere files were cloned"
cd $project
echo "show the contents of README.md"
echo ""
cat README.md # show contents of file, in this case markdown
echo ""
echo "end of README.md"
Env, Git and GitHub
Env(ironment) is used to capture things like path to Code or Home directory. Git and GitHub is NOT Only used to exchange code between individuals, it is often used to exchange code through servers, in our case deployment for Website. All tools we use have a behind the scenes hav relationship with the system they run on (MacOS, Windows, Linus) or a relationship with servers which they are connected to (ie GitHub). There is an "env" command in bash. There are environment files and setting files (.git/config) for Git. They both use a key/value concept.
- "env" show setting for your shell
- "git clone" sets up a director of files
- "cd $project" allows user to move inside that directory of files
- ".git" is a hidden directory that is used by git to establish relationship between machine and the git server on GitHub.
echo "Show the shell environment variables, key on left of equal value on right"
echo ""
env
cd $project
echo ""
echo "show the secrets of .git"
cd .git
ls -l
echo ""
echo "look at config file"
cat config
Hacks
Go back to some of the deployment procedures and think about some thing you could verify through Bash notebook.
- Is there anything we use to verify tools we install? Think about versions.
- Is there anything we could verify with Anaconda?
- How would you update a repository?
- Really cool would be automating a procedure from installation.