Linux file Management basic commands and wildcard basics

1. first introduce to you the Linux system copy, cut, delete Three musketeers:

   (1)CP command is actually copy files and directories;

   Common options:

   -A, which means preserving the original data attributes;

   -R, which represents the recursive option, all directories and all files under the directory;

For example:

the as shown: -A Options

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we can see the /tmp/uo There are many files and directories below, so we use #cp –a uo./ou put the current directory under the UO directory is copied to the current ou directory, use the ls command to view it.

below are the following -A option, here is an example of a diagram ; as shown in 1.2

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Here we use the Filter command to view the letters "S" start with a letter "E" end of the file as an example, and is a linked file, we can see that the file size is "+" , we use the " -A "option to copy the command, save his original property, and the blue part is not added ' -a ' option, his file size is " - ".

( 2 ) MV the order is actually Move (rename) files , and in the same directory this command is renamed;

MV command common options are: -T, copy source all to target and rename;

2.1 as shown:

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( 3 ) RM the order is actually Remove files or directories ,

Common Options - R: Recursive options

- F : Mandatory Options

3.1 as shown:

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( 4 ) Here we talk about linux [glob] knowledge, when we are in the /etc/

4.1 as shown:
Here we take / etc under, with the letter "S" start with the letter "E" the end of the file or directory, shown here is a link file,

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Let me introduce you to some wildcard characters:

[[: Alpha:]]: Any uppercase and lowercase letters;   * : Any character that represents any length;

[[: Lower:]]: any lowercase letter; ? : represents any single character;

[[: Upper:]]: any uppercase letters;    []: the character of the specified range;

[[:d Igit:]]: any number;         [^] : A character that indicates a match;

[[: Alnum:]]: any number and letter

[[: Space:]]: White space characters

[[:p UNCT:]]: arbitrary Punctuation

Next we'll do an example:

View / etc directory, with the letter S,n,r start, middle, and at least one number, ending with . D end of file or directory

4.2 as shown: #ls-D/etc/[s,n,r]*[0-9]*[[:p unct:]]d

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The above content is not very simple, please pay attention to this blog, every week will have new discoveries!!

later I will introduce the other three musketeers: grep , sed , awk

Linux file Management basic commands and wildcard basics