Why I Created This Function

At first, I used an alias

alias gitdir="cd ~/Git/" (This means gitdir switches to the ~/Git/ directory, but I wanted it to switch directly to a repository.)
So, I wrote a Bash function.

Write Code to .bashrc File

The .bashrc file runs when a new terminal window is opened.
So, we need to write the function inside this file.

Code

gitrepo() {
    # Exact Match
    repoList=$(ls $HOME/Git)
    if [ -n "$(echo "$repoList" | grep -w $1)" ]; then
	cd $HOME/Git/$1
    else
	# Relevant Match
	getRepoName=$(echo "$repoList" | grep -i -m 1 $1)
	
	if [ -n "$getRepoName" ]; then
	    cd "$HOME/Git/$getRepoName"
	else
	    echo "Repository Not Founded"
	    cd $HOME/Git
	fi
	
    fi   
}

Code Explanation

The $repoList variable stores the list of directories inside the Git folder.

Function Logic Has Two Parts:

• Exact Match
• Relevant Match

Exact Match

if [ -n "$(echo "$repoList" | grep -w $1)" ]; then
	cd $HOME/Git/$1

If condition: The $repoList variable parses input for grep.

• grep -w matches only whole words.
• $1 is the function’s argument in bash.
• -n checks if a variable is not empty. Example syntax:
  [ a != "" ] is equivalent to [ -n a ]

Relevant Match

getRepoName=$(echo "$repoList" | grep -i -m 1 $1)
	if [ -n "$getRepoName" ]; then
	    cd "$HOME/Git/$getRepoName"

Relevant search: If no Exact Match is found, this logic is executed next.

getRepoName="$repoList" | grep -i -m 1 $1

• -i ignores case sensitivity.
• -m 1 returns only the first match.

Example of -m with grep:
ls | grep i3
It returns i3WM and i3status, but -m 1 ensures only i3WM is selected.

No Match

If no match is found, it simply changes the directory to the Git folder.

	else
	    echo "Repository Not Founded"
	    cd $HOME/Git

What I Learned

• Basics of Bash functions
• How to use .bashrc and reload changes.