purpose
find The command is used to find files in the specified directory .
Full name
nothing
Parameters
-name ： Followed by the file name pattern that needs to be matched , You need to use quotation marks
Here are some simple examples to find ：(~ Express $HOME Catalog )
1. Find the current $HOME Next '.log' Final document
find ~ –name "*.log" –print
2. Find all under the current directory and subdirectories '.log' Final document
find . –name "*.log" –print
3. Find the files whose file names begin with a capital letter under the current directory and subdirectories
find . –name "A-Z" –print
4. stay /etc Find the file name in the directory to host Opening file
find /etc –name "host*" –print
5. Find a file name in the current directory that begins with a lowercase letter , And finally 4 To 9 add .txt The closing document
find . –name "a-z*4-9.txt" –print
-iname ： Find the file by its name , Case insensitive
1. Find the file name .log Final document , Case insensitive
find . –iname "*.log" –print
-perm ： Followed by file permissions , Find files by file permission mode
1. Find the file permissions in the current directory 777 The file of
find . –perm 777 –print
-prune ： Ignore a directory
1. Hope that in tmp The lookup , But I don't want to be in /tmp/tmp1 The lookup
find test –path "/tmp/tmp1" –prune –o –print
2. Hope that in tmp The lookup , But I don't want to be in /tmp/tmp1、/tmp/tm2、/tmp/tmp3 Wait for multiple folders to find
find test (–path tmp/tmp1 –o –path tmp/tmp2 –o –path tmp/tmp2 ) –prune –o –print
-user And nouser ： Search and find the file whose master account has been deleted according to the file owner
1. Find file owner as qinys All files for
find ~ –user qinys –print
2. Find and delete users Tom The file of
find /home –nouser –print
-group And nogroup ： Find and search the deleted files belonging to the user group according to the user group to which the file belongs
1. Find file owner as qinys All files for
find ~ –group gp1 –print
2. Find and delete users Tom The file of
find /home –nogroup –print
-mtime\atime\ctime ： Find the file according to the change time or access time
1. Find the change time in the root directory at 5 Documents within days
find / –mtime -5 –print
2. lookup /home Under the table of contents 3 Documents of the past
find / –mtime +3 –print
-newer ： Look for all files that have changed more recently than one file but are older than another
grammar ：new\_file\_name ! old\_file\_name
among ！ It's logical and non symbolic
1. Find change time than file a.log new , But it's more than a file b.log Old documents ( If it is in the directory now /home Next )
find –newer a.log ! -newer b.log
2. Find change time ratio tmp.log New files
find . –newer tmp.log
-size ： Find files based on file size ( The file length here can be measured in blocks , Bytes can also be used to measure )
1. Find the file in the current directory whose length is greater than 1M Byte file
find . –size +1000000c –print
2. In the catalog /home The length of the next search file is exactly 100 Byte file
find . –size 100c –print
3. The search length in the current directory exceeds 10 Block file ( A piece is equal to 512 byte )
find . –size +10 –print
-type ： Find a type of file , Such as ：
b - Block device file .
d - Catalog .
c - Character device file .
p - Pipeline files .
l - Symbolic link file .
f - Ordinary documents .
Case study
1. Find the change time in the directory at 6 Days ago and delete them （ notes ： It's today 20190109）
2. Find the change time in the directory at 1 The suffix before the day is .log And delete them , Prompt when deleting
20 advanced Linux find Examples
