if:tldr:f4017

This command is a basic shell script command used for conditional branching.

Here is the breakdown of the command:

1. if [[ -e ${filename_or_directory} ]]; then - This is the start of the if statement. It checks if the file or directory specified by ${filename_or_directory} exists or not.

   • [[ -e ${filename_or_directory} ]] : -e is a test operator which checks if the file or directory exists. ${filename_or_directory} should be replaced with the actual name or path of the file or directory you want to check.

2. ${echo "Condition is true"} - This is the command to execute if the condition inside the if statement is true. In this case, it will simply display the message "Condition is true".

Note: ${} is used to reference the value of a variable.

3. fi - This marks the end of the if statement.

So, in summary, if the file or directory specified by ${filename_or_directory} exists, it will execute the command echo "Condition is true". If it does not exist, the command inside the if statement will be skipped.