6 years ago a guy looked at me face to face, and boldly told me; "I don't like you!" I immediately fired a response, I asked him that day; "Thank you for the honest feedback, but those that you like, how has it made their life better? How does your liking people pay their bills or take a bank loan? My brother keep your like, I need God's like And that's what guarantees my future. Today I joined a CEO friend of mine in an interview Panel to recruit some new staff, it was a long session, as we returned from a coffee break to continue the hectic interview session, here was this same guy walked in with his grey jacket and CV coming for the interview. Our eyes kissed by fluke, we immediately recognised each other; "the world is indeed spherical", I soliloquized. He felt very uncomfortable through out the interview, one could clearly see the volcanic eruption ongoing in his whole nervous system, he even mistook his date of birth for his last date of empl...
rsync is a software application for Unix systems which synchronizes
files and directories from one location to another while minimizing data
transfer using delta encoding when appropriate. An important feature of
rsync not found in most similar programs/protocols is that the
mirroring takes place with only one transmission in each direction.
rsync can copy or display directory contents and copy files, optionally
using compression and recursion.
The rsync utility uses an
algorithm (invented by Australian computer programmer Andrew Tridgell)
for efficiently transmitting a structure (such as a file) across a
communications link when the receiving computer already has a different
version of the same structure.
The recipient splits its copy of the file into fixed-size non-overlapping chunks, of size S, and computes two checksums for each chunk: the MD4 hash, and a weaker 'rolling checksum'. It sends these checksums to the sender.
The sender then compares its rolling checksums with the set sent by the recipient to determine if any matches exist. If they do, it verifies the match by computing the MD4 checksum for the matching block and by comparing it with the MD4 checksum sent by the recipient.
The sender then sends the recipient those parts of its file that didn't match any of the recipient's blocks, along with assembly instructions on how to merge these blocks into the recipient's version to create a file identical to the sender's copy.
If the sender's and recipient's versions of the file have many sections in common, the utility needs to transfer relatively little data to synchronize the files. Wikipedia, rsync
The recipient splits its copy of the file into fixed-size non-overlapping chunks, of size S, and computes two checksums for each chunk: the MD4 hash, and a weaker 'rolling checksum'. It sends these checksums to the sender.
The sender then compares its rolling checksums with the set sent by the recipient to determine if any matches exist. If they do, it verifies the match by computing the MD4 checksum for the matching block and by comparing it with the MD4 checksum sent by the recipient.
The sender then sends the recipient those parts of its file that didn't match any of the recipient's blocks, along with assembly instructions on how to merge these blocks into the recipient's version to create a file identical to the sender's copy.
If the sender's and recipient's versions of the file have many sections in common, the utility needs to transfer relatively little data to synchronize the files. Wikipedia, rsync
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