The CP command in Linux

CP command--file copy

Copy commands for directories and files

CP command syntax and parameters:

CP [OPTION] ... SOURCE ... DIRECTORY

-A	All	Equivalent to DPR
-D		When you copy a symbolic link source file, the destination file also creates the original file of the symbolic link execution source file
-P	Preserve	Preserve file attributes, owner, group, permissions, and time
-R	Recursive	Sub-Files in the recursive directory

Example:

[Email protected] ~]# ll/etc/services

-rw-r--r--1 root root 362031 2006-02-23/etc/services

[Email protected] ~]# stat/etc/services

File: "/etc/services"

size:362031 blocks:728 IO block:4096 general file

device:fd00h/64768dinode:2282597 links:1

Access: (0644/-rw-r--r--) Uid: (0/root) Gid: (0/root)

access:2014-11-11 11:20:33.000000000 +0800

modify:2006-02-23 21:09:23.000000000 +0800

Change:2014-10-21 15:21:26.000000000 +0800

[Email protected] ~]# cp-a/etc/services/tmp/services

[Email protected] ~]# ll/tmp/services

-rw-r--r--1 root root 362031 2006-02-23/tmp/services

[Email protected] ~]# stat/tmp/services

File: "/tmp/services"

size:362031 blocks:728 IO block:4096 general file

device:fd00h/64768dinode:1434761 links:1

Access: (0644/-rw-r--r--) Uid: (0/root) Gid: (0/root)

access:2014-11-11 11:20:33.000000000 +0800

modify:2006-02-23 21:09:23.000000000 +0800

change:2014-11-11 11:44:39.000000000 +0800

Description: All properties and permissions for the file have been copied, and CTime has changed

Extension: The source file is copied to the destination directory where the hint file already exists, how to overwrite the target file directly? And let the system not prompt to overwrite it?

[Email protected] ~]# cp-a/etc/services/tmp/

CP: Do you want to overwrite "/tmp/services"?

In scripts, it is not possible to manually participate in the interaction, the workaround:

1. [Email protected] ~]# \cp-a/etc/services/tmp/services

2. [Email protected] ~]# Unalias CP
   [Email protected] ~]# cp-a/etc/services/tmp/

3. [Email protected] ~]#/bin/cp-a/etc/services/tmp/services
   Description: By default, cp= Cp-i but the-i parameter is the meaning of the hint overlay

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The CP command in Linux