greengeek wrote: Mon Sep 09, 2024 12:58 am
Thanks @geo_c - so if I had a directory "Familia" containing thousands of family images on my source drive - and a similar "Familia" directory on my target drive - could I run this sort of script and expect only new images to be copied across?
And I notice "--delete" in your script - does it delete certain images? (I am wanting to avoid this risk)
cheers!
Yes, it will copy any files not found in the target directory, and the --delete option deletes files in the target directory not found in the source directory. This is how I keep from having duplicate files.
Of course you have to keep your logic straight when doing syncing of this nature.
here's rsync help, so you can look at the options I have in my script. You may want a different set of options based on your needs. My command preserves ownerships and permissions, deletes files on target not found on source, copies symlinks as symlinks, preserves hard links, preserves extended attributes, safely sends arguments (not sure why I have that), etc...
Code: Select all
Usage: rsync [OPTION]... SRC [SRC]... DEST
or rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST
or rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST
or rsync [OPTION]... SRC [SRC]... rsync://[USER@]HOST[:PORT]/DEST
or rsync [OPTION]... [USER@]HOST:SRC [DEST]
or rsync [OPTION]... [USER@]HOST::SRC [DEST]
or rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]
The ':' usages connect via remote shell, while '::' & 'rsync://' usages connect
to an rsync daemon, and require SRC or DEST to start with a module name.
Options
--verbose, -v increase verbosity
--info=FLAGS fine-grained informational verbosity
--debug=FLAGS fine-grained debug verbosity
--stderr=e|a|c change stderr output mode (default: errors)
--quiet, -q suppress non-error messages
--no-motd suppress daemon-mode MOTD
--checksum, -c skip based on checksum, not mod-time & size
--archive, -a archive mode is -rlptgoD (no -A,-X,-U,-N,-H)
--no-OPTION turn off an implied OPTION (e.g. --no-D)
--recursive, -r recurse into directories
--relative, -R use relative path names
--no-implied-dirs don't send implied dirs with --relative
--backup, -b make backups (see --suffix & --backup-dir)
--backup-dir=DIR make backups into hierarchy based in DIR
--suffix=SUFFIX backup suffix (default ~ w/o --backup-dir)
--update, -u skip files that are newer on the receiver
--inplace update destination files in-place
--append append data onto shorter files
--append-verify --append w/old data in file checksum
--dirs, -d transfer directories without recursing
--old-dirs, --old-d works like --dirs when talking to old rsync
--mkpath create destination's missing path components
--links, -l copy symlinks as symlinks
--copy-links, -L transform symlink into referent file/dir
--copy-unsafe-links only "unsafe" symlinks are transformed
--safe-links ignore symlinks that point outside the tree
--munge-links munge symlinks to make them safe & unusable
--copy-dirlinks, -k transform symlink to dir into referent dir
--keep-dirlinks, -K treat symlinked dir on receiver as dir
--hard-links, -H preserve hard links
--perms, -p preserve permissions
--executability, -E preserve executability
--chmod=CHMOD affect file and/or directory permissions
--acls, -A preserve ACLs (implies --perms)
--xattrs, -X preserve extended attributes
--owner, -o preserve owner (super-user only)
--group, -g preserve group
--devices preserve device files (super-user only)
--copy-devices copy device contents as a regular file
--write-devices write to devices as files (implies --inplace)
--specials preserve special files
-D same as --devices --specials
--times, -t preserve modification times
--atimes, -U preserve access (use) times
--open-noatime avoid changing the atime on opened files
--crtimes, -N preserve create times (newness)
--omit-dir-times, -O omit directories from --times
--omit-link-times, -J omit symlinks from --times
--super receiver attempts super-user activities
--fake-super store/recover privileged attrs using xattrs
--sparse, -S turn sequences of nulls into sparse blocks
--preallocate allocate dest files before writing them
--dry-run, -n perform a trial run with no changes made
--whole-file, -W copy files whole (w/o delta-xfer algorithm)
--checksum-choice=STR choose the checksum algorithm (aka --cc)
--one-file-system, -x don't cross filesystem boundaries
--block-size=SIZE, -B force a fixed checksum block-size
--rsh=COMMAND, -e specify the remote shell to use
--rsync-path=PROGRAM specify the rsync to run on remote machine
--existing skip creating new files on receiver
--ignore-existing skip updating files that exist on receiver
--remove-source-files sender removes synchronized files (non-dir)
--del an alias for --delete-during
--delete delete extraneous files from dest dirs
--delete-before receiver deletes before xfer, not during
--delete-during receiver deletes during the transfer
--delete-delay find deletions during, delete after
--delete-after receiver deletes after transfer, not during
--delete-excluded also delete excluded files from dest dirs
--ignore-missing-args ignore missing source args without error
--delete-missing-args delete missing source args from destination
--ignore-errors delete even if there are I/O errors
--force force deletion of dirs even if not empty
--max-delete=NUM don't delete more than NUM files
--max-size=SIZE don't transfer any file larger than SIZE
--min-size=SIZE don't transfer any file smaller than SIZE
--max-alloc=SIZE change a limit relating to memory alloc
--partial keep partially transferred files
--partial-dir=DIR put a partially transferred file into DIR
--delay-updates put all updated files into place at end
--prune-empty-dirs, -m prune empty directory chains from file-list
--numeric-ids don't map uid/gid values by user/group name
--usermap=STRING custom username mapping
--groupmap=STRING custom groupname mapping
--chown=USER:GROUP simple username/groupname mapping
--timeout=SECONDS set I/O timeout in seconds
--contimeout=SECONDS set daemon connection timeout in seconds
--ignore-times, -I don't skip files that match size and time
--size-only skip files that match in size
--modify-window=NUM, -@ set the accuracy for mod-time comparisons
--temp-dir=DIR, -T create temporary files in directory DIR
--fuzzy, -y find similar file for basis if no dest file
--compare-dest=DIR also compare destination files relative to DIR
--copy-dest=DIR ... and include copies of unchanged files
--link-dest=DIR hardlink to files in DIR when unchanged
--compress, -z compress file data during the transfer
--compress-choice=STR choose the compression algorithm (aka --zc)
--compress-level=NUM explicitly set compression level (aka --zl)
--skip-compress=LIST skip compressing files with suffix in LIST
--cvs-exclude, -C auto-ignore files in the same way CVS does
--filter=RULE, -f add a file-filtering RULE
-F same as --filter='dir-merge /.rsync-filter'
repeated: --filter='- .rsync-filter'
--exclude=PATTERN exclude files matching PATTERN
--exclude-from=FILE read exclude patterns from FILE
--include=PATTERN don't exclude files matching PATTERN
--include-from=FILE read include patterns from FILE
--files-from=FILE read list of source-file names from FILE
--from0, -0 all *-from/filter files are delimited by 0s
--old-args disable the modern arg-protection idiom
--secluded-args, -s use the protocol to safely send the args
--trust-sender trust the remote sender's file list
--copy-as=USER[:GROUP] specify user & optional group for the copy
--address=ADDRESS bind address for outgoing socket to daemon
--port=PORT specify double-colon alternate port number
--sockopts=OPTIONS specify custom TCP options
--blocking-io use blocking I/O for the remote shell
--outbuf=N|L|B set out buffering to None, Line, or Block
--stats give some file-transfer stats
--8-bit-output, -8 leave high-bit chars unescaped in output
--human-readable, -h output numbers in a human-readable format
--progress show progress during transfer
-P same as --partial --progress
--itemize-changes, -i output a change-summary for all updates
--remote-option=OPT, -M send OPTION to the remote side only
--out-format=FORMAT output updates using the specified FORMAT
--log-file=FILE log what we're doing to the specified FILE
--log-file-format=FMT log updates using the specified FMT
--password-file=FILE read daemon-access password from FILE
--early-input=FILE use FILE for daemon's early exec input
--list-only list the files instead of copying them
--bwlimit=RATE limit socket I/O bandwidth
--stop-after=MINS Stop rsync after MINS minutes have elapsed
--stop-at=y-m-dTh:m Stop rsync at the specified point in time
--fsync fsync every written file
--write-batch=FILE write a batched update to FILE
--only-write-batch=FILE like --write-batch but w/o updating dest
--read-batch=FILE read a batched update from FILE
--protocol=NUM force an older protocol version to be used
--iconv=CONVERT_SPEC request charset conversion of filenames
--checksum-seed=NUM set block/file checksum seed (advanced)
--ipv4, -4 prefer IPv4
--ipv6, -6 prefer IPv6
--version, -V print the version + other info and exit
--help, -h (*) show this help (* -h is help only on its own)
You might want to experiment by copying some files into a test directory and seeing it how operates on an empty target directory before running it on your valuable data.
