In terminal, it is possible for you to write single line conditional statements, where you can execute a single line of statement if a condition satisfies or otherwise.
Here is the command which you can use.
$ [ -d yourfolder ] && echo “Directory Exists.” || echo “Directory does not exists.”
This command will first check whether there is a file named “yourfolder” in the current location and based on the result, it will decide which statement to execute.
Here if the folder is there, then it will display the line “Directory Exists.” in the terminal and if the folder is not there, then it will display the line “Directory does not exists.”.