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Findstr--Notes

Findstr is capable of finding the exact text you are looking for in any ASCII file or files. Sometimes, however, you have only part of the information that you want to match, or you want to find a wider range of information. In such cases, findstr has the powerful capability to search for patterns of text using regular expressions.

Regular expressions are a notation for specifying patterns of text, as opposed to exact strings of characters. The notation uses literal characters and metacharacters. Every character that does not have special meaning in the regular-expression syntax is a literal character and matches an occurance of that character. For example, letters and numbers are literal characters. A metacharacter is a symbol with special meaning (an operator or delimiter) in the regular-expression syntax. These are the metacharacters accepted by findstr:

.
Wildcard: any character
*
Repeat: zero or more occurances of previous character or class
^
Line position: beginning of line
$
Line position: end of line
[class]
Character class: any one character in set
[^class]
Inverse class: any one character not in set
[x-y]
Range: any characters within the specified range
\x
Escape: literal use of metacharacter x
\<xyz
Word position: beginning of word
xyz\>
Word position: end of word

The special characters in regular expression syntax are most powerful when they are used together. For example, the following combination of the wildcard character (.) and repeat (*) characters

.*

matches any string of characters. This expression is useful when it is part of a larger expression, such as

b.*ing

which matches any string beginning with B and ending with ing.

More Information About Findstr

ntcmds00000001.gif Findstr--Examples

ntcmds00000001.gif Findstr

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