Getting the change number of the first revision of a file in Perforce?

Question

Is there a way to retrieve the change of the first revision of a file in Perforce? Sometimes I want to read the job description of the change that introduced a file, in order to learn what the file does, as well as to find related CRs for more information. I'm looking for something in the command line, e.g.

p4 <something> <file>

Answer 1

Ah, never mind, I found the subcommand I needed, p4 fstat, just after posting the question.

$ p4 fstat cama_Preempt#1
... depotFile //depot/MMA/products/CAMA/main/src/testScripts/cama_Preempt
... clientFile /ext1/acheong/CAMA/main/src/testScripts/cama_Preempt
... isMapped
... headAction add
... headType text
... headTime 1174070670
... headRev 1
... headChange 168703
... headModTime 1174070479
... haveRev 1

The headChange field shows the change number.