Kevin G. questions

• how to make sysfs changes persistent in centos 7 (systemd)
• Does django + mod_wsgi require threaded programming discipline?
• Perl convert a filehandle in-place/streaming from cp1252 to utf-8?
• what is the behavior of (.)+ in a regex?
• in perl how to write to caller's variable without using XS?
• go idiom for writing long regular expressions, embedded comments?
• what is the correct charset for a application/pdf content-type http response header?

Kevin G. answers