Best Practices

  1. 2 min read

    The locate command is one of the best tools for finding files quickly by filename. This command reads one or more databases prepared by updatedb and writes files matching at least one of the patterns to standard output (one per line). You may need to install mlocate to enable this feature. This article provides instructions for installing mlocate on CentOS and Fedora.

  2. 3 min read

    In addition to using a spam filtering program like SpamAssassin, you can use remote block lists (RBLs, also called DNSBLs) to look for spam in your incoming email. RBLs are lists of IP addresses that are associated with spam email. Your server asks an RBL if the email sender IP is on its list of spam addresses. If it is, your server’s settings can reject the message and send it back with an error, accept the message and tag it for further spam filtering, or accept the message and deliver it to your inbox.

  3. 5 min read

    Rsync is a utility commonly found on Linux operating systems and is a remote and local file synchronization tool. rsync stands for remote sync. The rsync algorithm is used to minimize network usage by only moving portions of files that have changed. This tutorial will take you through the following: basic rsync usage, remote transfers, alternate SSH ports.