Linux Basic Command Learning CP (4)

Cp

1. Command Format

Usage:

CP [Options ] ... [-t] source purpose

or: cp [Options ] ... Source... Catalogue

or: cp [Options] ...-t directory source ...

2. Command function

Copy the source file to the destination file, or copy multiple source files to the destination directory .

3. command parameters and instances

-A,--archive equals-dr--preserve=all

--backup[=control Create a backup for each existing target file

-B similar to--backup but does not accept parameters

--copy-contents in recursive processing is to copy special file contents

-D equals--no-dereference--preserve=links

-F,--force if the destination file cannot be opened, remove it and try again (when the-n option

There is no need to select this option)

-I,--interactive before overwriting (invalidates the previous-n option)

-H follow the command-line symbolic link in the source file

-L,--link link files without copying

-L,--dereference always follow the symbolic link

-N,--no-clobber do not overwrite existing files (invalidates the previous-i option)

-P,--no-dereference does not follow the symbolic link in the source file

-P equals--preserve= mode, ownership, timestamp

the--preserve[= property list retains the specified property (default: Mode, ownership, timestamp), as the result may persist attached properties: environment, links, xattr, etc.

-R,-R,--recursive copy all items in directory and directory

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Instance one: Copy a single file to the destination directory, the file does not exist in the destination file

Cp/data/a.txt/test

[Email protected] data]# cp/data/a.txt/test[[email protected] data]# ll/testtotal 28drwxr-xr-x. 2 root root 4096 Nov 05:12 a-rw-r--r--. 1 root root 05:26 a.txtdrwxr-xr-x. 2 root root 4096 Nov 05:12 bdrwxr-xr-x. 2 root root 4096 Nov 05:12 cdrwxr-xr-x. 3 root root 4096 Nov 05:14 test1drwxr-xr-x. 5 root root 4096 Nov 05:14 test2drwxr-xr-x. 5 root root 4096 Nov 05:14 Try[[email protected] data]#

Instance two: When the target file is present, it asks whether to overwrite

Command:

CP /data/a.txt/test/a.txt

[Email protected] data]# cp/data/a.txt/test/a.txtcp:overwrite '/test/a.txt '?

Example three: Copying the entire directory

command: cp-a/data/test

[Email protected] data]# cp-a/data/test[[email protected] data]# ll/testtotal 32drwxr-xr-x.  2 root root 4096 Nov 05:12 a-rw-r--r--.  1 root root 05:26 a.txtdrwxr-xr-x.  2 root root 4096 Nov 05:12 bdrwxr-xr-x. 2 root root 4096 Nov 05:12 cdrwxr-xr-x.  Root root 4096 Nov 05:09 datadrwxr-xr-x.  3 root root 4096 Nov 05:14 test1drwxr-xr-x.  5 root root 4096 Nov 05:14 test2drwxr-xr-x. 5 root root 4096 Nov 05:14 Try[[email protected] data]#

Example four: Copy the Log.log to create a link file Log_link.log

Command:

cp-s a.txt Link_a.txt

[[email protected] data]# cp -s a.txt link_a.txt[[email protected]  Data]# lltotal 52-rw-r--r--.  1 root root    0 nov 14   2012 admin.log-rw-r--r--.  1 root root   15 nov 13  04:09 a.txt-rw-r--r--.  1 root root   31 nov 13 04:09  b.txt-rw-r--r--.  1 root root   81 Nov 13 04:09  C.txtdrwxr-xr-x. 2 root root 4096 nov 13 04:58 dcpdrwxr-xr-x. 2  root root 4096 nov 13 03:49 dongdrwxr-xr-x. 2 root root  4096 nov 13 05:03 jimlrwxrwxrwx. 1 root root    5  Nov 13 05:38 link_a.txt -> a.txtdrwxr-xr-x. 2 root root  4096 nov 13 05:03&nbSp;lucy-rw-r--r--.  1 root root    0 Nov 13 04:13  Pbc.bmpdrwxrwxrwx. 2 root root 4096 nov 13 05:09 superdrwxr-xr-x.  3 root root 4096 nov 13 05:03 teacherdrwxr-xr-x. 2 root  root 4096 nov 13 05:06 teamdrwxr-xr-x. 2 root root 4096  Nov 13 05:04 test1drwxr-xr-x. 3 root root 4096 Nov 13  05:06 test2-rw-r--r--.  1 root root    0 nov 13 04:48  test.txtdrwxr-xr-x. 2 root root 4096 nov 13 04:08 you[[email  protected] data]#

This article is from the "Qin Xian son" blog, please make sure to keep this source http://youdong.blog.51cto.com/3562886/1718142

Linux Basic Command Learning CP (4)