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Full Discussion: rsync vs cp
Top Forums UNIX for Dummies Questions & Answers rsync vs cp Post 302178116 by lazytech on Monday 24th of March 2008 04:51:54 PM
Old 03-24-2008
To answer that let me explain the difference.

Basically cp will perform a copy from one location to another.

rsync is more advanced. Its more designed for synchronizing directories. It can copy files from one location to another like cp but if the file already exists or has not changed size or modification time (depending on the flags you use) it will not copy that file again to save time. The time it takes to copy a file should not differ between rsync and cp.
 

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CP(1)							      General Commands Manual							     CP(1)

NAME
cp - copy SYNOPSIS
cp [ -ip ] file1 file2 cp [ -ipr ] file ... directory DESCRIPTION
File1 is copied onto file2. By default, the mode and owner of file2 are preserved if it already existed; otherwise the mode of the source file modified by the current umask(2) is used. The -p option causes cp to attempt to preserve (duplicate) in its copies the modification times and modes of the source files, ignoring the present umask. In the second form, one or more files are copied into the directory with their original file-names. Cp refuses to copy a file onto itself. If the -i option is specified, cp will prompt the user with the name of the file whenever the copy will cause an old file to be overwrit- ten. An answer of 'y' will cause cp to continue. Any other answer will prevent it from overwriting the file. If the -r option is specified and any of the source files are directories, cp copies each subtree rooted at that name; in this case the destination must be a directory. SEE ALSO
cat(1), mv(1), rcp(1C) 4th Berkeley Distribution June 8, 1985 CP(1)
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