Linux/Basic commands/rsync

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rsync[1] is an advanced copy and synchronization tool including progress indicator.

Configuration files[edit | edit source]

  • /etc/rsyncd.conf which includes don't compress options for some file extensions

Options[edit | edit source]

-W, --whole-file
-z, --compress compresses the file data as it is sent to the destination machine using zlib compression library

Basic commands[edit | edit source]

  • Copy files from remote server to local machine: rsync -chavzP --stats /path/to/local/storage[2] (explainshell[3])
-c, --checksum option can slow transfers specially for large files
-h, --human-readable
-a, --archive. Equivalent to -rlptgoD
-v, --verbose
-z, --compress
-P, --partial --progress. --partial keep partially transferred files
--stats, print statistics
-a, --archive. Equivalent to -rlptgoD
-r --recursive recurse into directoriees
-l --links copy symlinks as symlinks
-p --perms preserve permissions
-t --times preserve modification times
-g --group preserve group
-o --owner preserve owner (super-user only)
-D same as --devices --specials

rsync -chavzP --stats /path/to/local/storage
receiving incremental file list

  • rsync -a -v --ignore-existing src dst

Compression[edit | edit source]

rsync support compression, but you can also compress your data with other external compression tools before using rsync. Such as bzip, gzip or xz

Compressing using xz[4]

  • xz -v -T0 file_to_compress
-v provides progress bar
-T0 use all available Threads, multi-threaded compression supported since 2014, version 5.2.0. [5]

Activities[edit | edit source]

  1. Create a remote copy of your files for backup proposes using rsync
  2. Read StackOverflow questions about rsync:
  3. Understand the differences between cp, scp and rsync:
  4. Learn Effect of Trailing Slash / in rsync:
  5. Learn use of --inplace for transferring large files and its important implications:, also evaluate -c, --checksum impact on transfering large files
  6. Learn about -W, --whole-file copy files whole (without delta-xfer algorithm), implications and usage cases such as not making a diff copy.
  7. Learn about --sparse option and conflicts with --inplace

See also[edit | edit source]