The Linux CP command always gives

Describe:

The CP command is used to copy one or more source files or directories to a specified destination file or directory. It can copy a single source file into a specific file with a specified file name or a directory that already exists. The CP command also supports copying multiple files at once, and when copying multiple files at a time, the target file parameter must be a directory that already exists, or an error will occur.

Description

CP command:cp-copy files and directories

Usage: cp source file target file;

Syntax format:

CP [OPTION] ... [-T] SOURCE DEST

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

CP [OPTION] ...-t DIRECTORY SOURCE ...

Single source copy: CP [OPTION] ... [-T] SOURCE DEST

if the dest does not exist, the directory will be created beforehand and the data of the copied file is streamed to dest

Multi-source replication: CP [OPTION] ... SOURCE ... DIRECTORY

CP [OPTION] ...-t DIRECTORY SOURCE ...

Common options:

-I: interactive replication, which indicates whether to overwrite before copying

-F: force overwrite target file

-r,r: recursively replicating directories

-D: Copy the symbolic link file itself instead of the source file it points to

-A: for archive Implementation

--preserve=[attr_list]

Mode: Permissions

Timestamps: time stamp

Xattr: Extended Properties

Links: Symbolic Links

All: Appeal All Properties

-P: equivalent to--preserv=mode,ownership,timestamp

-V: Display procedure

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Example:

1. copy file A to/TMP under current directory, file a pre-existing

[[email protected] ~]# CP a/tmp[[email protected] ~]# Ls/tmpa KS-SCRIPT-MVRGLM ks-script-mvrglm.log yum.log

2, copy the current directory under file A, file B to/tmp/e, file e pre-existing:

[email protected] ~]# cp a/tmp/ecp:overwrite '/tmp/e '? Y

3, copy the current directory under Files A to/tmp/a, the directory pre-existing:

[[email protected] ~]# CP a/tmp/a[[email protected] ~]# LS/TMP/AA

4, copy the file under the current directory, A, B to G, G does not exist beforehand:

[[email protected] ~]# CP a b gcp:target ' G ' is not a directory

5, copy the files under the current directory A, B to/tmp/z, file Z pre-existing:

[[email protected] ~]# CP a b C d/tmp/zcp:target '/tmp/z ' is not a directory

6. Copy the file under the current directory, A, b to/tmp/b, and the pre-existing directory:

[[email protected] ~]# CP a b/tmp/b[[email protected] ~]# ls/tmp/ba b

7, copy the directory under the current directory A to/tmp:

[[email protected] ~]# cp-r a/tmp[[email protected] ~]# Ls/tmp/ac D

8, copy the current directory under directory A to/tmp/a, file a pre-existing:

[[email protected] ~]# cp-r a/tmp/acp:cannot overwrite non-directory '/tmp/a ' with directory ' A '

9, copy the directory under the current directory A to/tmp:

[[email protected] ~]# cp-r a/tmp[[email protected] ~]# Ls/tmp/ac D

Exercises:

1, using the alias command Baketc, the daily /etc/ directory of all files, backup to /testdir/ under the new directory under a separate,

and requires that the new directory be formatted as BACKUPYYYY-MM-DD , the backup process is visible

# alias Baketc= ' cp-arv/etc//testdir/backup$ (date +%f) '

2, First create /testdir/rootdir directory, and then copy /root all the next files into that directory and require that the original permissions be retained

# CP--preserve=mode-r/root//TESTDIR/ROOTCP

Concluding remarks:    

The above content is my summary of CP command, because I beginner Linux, to this command understanding and understanding is not comprehensive and in-depth, inevitably there will be omissions, hope you pass the talent of many advice, greatly appreciated!

The Linux CP command always gives