How to use the Find command in Linux

There are two ways to find files:

First, locate: not real-time search, fuzzy matching, search based on system-wide file database; fast

# UpdateDB: is to manually generate a file database; fast

Second, find: real-time search, accurate matching, support a number of lookup standards, traversing the specified directory of all files to complete the search; slow

Use of the Find command

Find lookup Path Lookup standard lookup to later processing operations

Find path: Default view current directory

Find criteria: Default to all files under the specified path

Processing operations: Default to display

Its matching criteria:

-name ' filename ': exact Match of filename

FileName Wildcard:

*: Any length

?: any single character

[]: matches any single character within the specified range

[: Space:]: blank characters

[:p UNCT:]: Punctuation

[: Lower:]: Small Letter

[: Upper:]: Capital letters

[: Alpha:]: Uppercase and lowercase letters

[:d Igit:]: Digital

[: Alnum:]: Numbers and uppercase and lowercase letters

Example: # find/etc-name ' passwd* '--> find files that begin with passwd in/etc directory

-iname ' filename ': filename matching is case-insensitive

-regex pattern: File name matching based on regular expressions

-user USERNAME: Based on the owner lookup

Example: # find/tmp-user student--> Find files that are subordinate to the/tmp directory student

-group groupname: Find by group

-uid uid: Finding by UID

Example: # Find/tmp-uid 2003--> find files with a UID of 2003 in the/tmp directory

-gid GID: Lookup based on GID

-nouser: Find files that are not owned by the owner

Example: # Find/tmp-nouser--> Find files with no owners in/tmp directory

-nogroup: Find files with no group

-type: Find by File type

File type:

F: Ordinary Documents

D: Catalog Files

B: Block device files (blocks)

C: Character device file (character)

L: Symbolic link eh file (pipe)

P: Command pipe file (pipe)

S: Socket file (socket)

Example: # Find/tmp-type F--> Find common Files in the/tmp directory

-size: Find [+|-] based on file size

(11M is greater than 10M less than or equal to 11M)

# k

# M

# G