Linux wildcard and regular expression + notepad ++, wildcard notepad

Linux wildcard and regular expression + notepad ++, wildcard notepad

Http://blog.csdn.net/pipisorry/article/details/24143801

Wildcard(Bash Operation)

In the bash operating environment, there is also a very useful wildcard function, that is, the wildcard (wildcard )! It is easier to process data with bash!

Common wildcard characters

In addition to wildcards, special symbols in the bash Environment

Note:

1. In theory, try not to use the above characters for your "file name"

2. For example, the bash command find can use wildcards.

Regular Expression

A regular expression is a query string that contains general characters and special characters. special characters can be used to expand the search string capability. The function of a regular expression in searching and replacing strings cannot be ignored, it can improve work efficiency.

Special characters in linux Regular Expressions

Note: [: Alnum:], [: alpha:], [: upper:], [: lower:], [: digit:] these must know what it means, because he is more than a-z quit A-Z purposes to be sure!

Characters)

Note:

1. Expression description
\ T tab.
\ N new line.
. Match any character.
| Match the characters on the left and right of the expression. For example, "AB | bc" matches "AB" or "bc ".
[] Match any single character in the list. For example, "[AB]" matches "a" or "B". "[0-9]" matches any number.
[^] Matches any single character out of the list. for example, "[^ AB]" matches characters other than "a" and "B. "[^ 0-9]" matches any non-numeric characters.
* The character on the left is matched any time (0 or multiple times). For example, "be *" matches "B", "be", or "bee ".
+ The character on the left is matched at least once (once or multiple times). For example, "be +" matches "be" or "bee" but does not match "B ".
? The character on the left is matched 0 times or 1 time. For example, "be? "Match" B "or" be "but not" bee ".
^ The expression on the right is matched at the beginning of A row. For example, "^ A" only matches rows starting with ".
$ The expression on the left is matched at the end of a row. For example, "e $" only matches rows ending with "e.
() Affects the order of expression matching and is used as the grouping tag of the expression.
\ Escape character. If you want to use "\" itself, you should use "\\".

2.In the regular expression, \ 1 indicates the Matching content in the first bracket. For example, see.

3.Note that the numeric representation is [0-9] And \ d cannot be used, for example, the number representation in the "find" command-regex parameter.

Notepad ++Application of Regular Expressions

[Use notepad ++ Regular Expressions]

From: http://blog.csdn.net/pipisorry/article/details/24143801

Ref: http://linux.vbird.org/linux_basic/0330regularex.php#basic_regexp