Never been to CodeSnippets before?

Snippets is a public source code repository. Easily build up your personal collection of code snippets, categorize them with tags / keywords, and share them with the world (or not, you can keep them private!)

3 total

On This Page:

  1. 1 Clear linux buffer cache
  2. 2 Clear DNS lookup / IP address cache on OS X Tiger
  3. 3 How to flush the local DNS cache on Mac OS X

Clear linux buffer cache

to cache linux disk buffer by joaocosta on Dec 05, 2008
// more info here
// http://www.linuxinsight.com/proc_sys_vm_drop_caches.html

echo 3 > /proc/sys/vm/drop_caches

How to flush the local DNS cache on Mac OS X

to lighttpd virtualhosting shell bash hosts dns cache by nickstenning on Jun 07, 2005 2 Comments
If you want to add a virtualhost on your Mac OS X box without having to wait around for ages, then the easiest way to do so is to shove a line into /etc/hosts and flush the dnscache. Here's a friendly bash function to throw into your .bashrc:

function edithosts {
	if [ -x "`which $EDITOR`" ] || [ -x "`which $1`" ]
	then
		if [ -x "`which $EDITOR`" ]
		then
			export TEMP_EDIT="`which $EDITOR`"
		else
			export TEMP_EDIT="`which $1`"
		fi
		echo "* Using ${TEMP_EDIT} as editor"
		$TEMP_EDIT /etc/hosts && echo "* Successfully edited /etc/hosts"
		lookupd -flushcache && echo "* Flushed local DNS cache"
	else
		echo "Usage: edithosts [editor]"
		echo "(The editor is optional, and defaults to \$EDITOR)"
	fi
	unset TEMP_EDIT
}


More simply, you can just flush the DNS cache manually with:

lookupd -flushcache
3 total

On This Page:

  1. 1 Clear linux buffer cache
  2. 2 Clear DNS lookup / IP address cache on OS X Tiger
  3. 3 How to flush the local DNS cache on Mac OS X