Programming and posix - April 2002

April 3, 2002
Solution Symposium
Page 30
hp e3000
programming
and posix
environment variables
• special string variables copied from parent to child when
new processes are created
• the POSIX shell will only copy exported variables
– foo=bar; export foo
– export foo=bar
• static copies of CI variables are exported by the
shell
• the environment is a process-local structure; your parent
and any already running children won’t see any
environment changes that you make