Rsync not updating timestamp
It offers a large number of options that control every aspect of its behavior and permit very flexible specification of the set of files to be copied.
It is famous for its delta-transfer algorithm, which reduces the amount of data sent over the network by sending only the differences between the source files and the existing files in the destination.
More than two -v options should only be used if you are debugging rsync.
Note that the names of the transferred files that are output are done using a default --out-format of "%n%L", which tells you just the name of the file and, if the item is a link, where it points.
When specifying a parameter, you can either use the form --option=param or replace the ’=’ with whitespace.
The parameter may need to be quoted in some manner for it to survive the shell’s command-line parsing.
Any changes in the other preserved attributes (as requested by options) are made on the destination file directly when the quick check indicates that the file’s data does not need to be updated.
Some of the additional features of rsync are: rsync accepts both long (double-dash word) and short (single-dash letter) options.
It can copy locally, to/from another host over any remote shell, or to/from a remote rsync daemon.Keep in mind that a leading tilde (~) in a file name is substituted by your shell, so --option=~/foo will not change the tilde into your home directory (remove the ’=’ for that).--help Print a short help page describing the options available in rsync and exit. Please visit this page to clear all LQ-related cookies.This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant.
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The full list of the available options are described below.