Linux Base Operation Lookup command

2018-01-26

Command: Whereis (find the fastest one, but only binary programs, documents, and source code can be found.)

Command format: whereis [options]

-B Find 2 binary programs

-M Find Documents

-S Find source

Command: which (advantage: One of the fastest commands in the Find tool can show the user the path to which the command is located.) Cons: Limited search scope)

Command format: which file name

Command: Find (strongest find tool, common)

Command format: Find path expression (expression to-, ()! The beginning before this is considered to be a path expression that can contain a wildcard character *? [] etc.)

　　　　　　-name Find a file for a name

Example: Find/etc-name passwd

-type Finding file type files of the specified type

| Connection

Catalog D

B-Block Equipment

s socket

P Piping (pipe)

F Regular Files

Example:

Find/-type l-print Find/-type D-print

-size N [C]

Find files of n-value size, default unit is block (1 block = 512 bytes)

Example:

Find files larger than the bytes #find ~-size +1500c

Find files that are equal to 1500k bytes #find ~-size 1500k

Find files less than ten blocks #find ~-size-10

Example of finding files/directories with byte 0 (i.e., empty pieces): #find/-empty

Find all files belonging to snow users

#find/-user Snow

Find files that belong to the snow group

#find/-group Snow

Find files that are not group and are not owned by the owner

#find/-nouser-nogroup

Linux Base Operation Lookup command