Tutorial on using sha1sum, a UNIX and Linux command to compute and check a SHA-1 message digest. Examples of reading a SHA-1 message digest, writing a SHA-1 message digest to a file, and checking a SHA-1 message digest.
Tutorial on using pwd, a UNIX and Linux command for printing the name of the current working directory. Examples of printing the current working directory, avoiding symlinks and how to get the current working directory in shell scripts.
Example of how to setup Cloudfront to log to S3, enable log rotation and how to download and work with combined Cloudfront log files.