Batch Convert image files
Guile lets us use ImageMagick and potrace with the procedures system
and system*
. I use (system "ls")
to check the files in the REPL
's current working directory. Browsing the manual(fn:1) showed (getcwd)
as a way to avoid (system "pwd")
, and (chdir "directory-to-change-to")
as a way to stay in scheme.