Here Today, Gone When You Exit: Proper Tempfiles in Shell Scripts
In the course of my career, I've periodically come across code like this in shell scripts: TEMP_FILE=/tmp/tempfile Or sometimes, slightly more elegantly: TEMPFILE=/tmp/tempfile.$$ The problems with the first example are obvious, especially if it appears in many different scripts.Β The second is better.Β The "$$" means "my process ID", who if whatever script had a process ID of 5309, the TEMPFILE variable would be set to /...
Read More