Powerful Command-Line Applications in Go

Cleaning Up Temporary Files

Currently, our program doesn’t clean up the temporary files because the method we used to create them doesn’t automatically clean them up. As you can see, running the tool multiple times creates different files:

$ go run main.go -file README.md
/tmp/mdp552496404.html
$ go run main.go -file README.md
/tmp/mdp016541878.html
$ ls -ltr /tmp/ | grep mdp
-rw------- 1 ricardo users   503 Apr 15 10:25 mdp807323568.html
-rw------- 1 ricardo users   503 Apr 15 10:27 mdp552496404.html
-rw------- 1 ricardo users   503 Apr 15 10:31 mdp016541878.html

This is expected as the program can’t assume how and when the files will be used. It’s your responsibility to delete ...