Linux Find,grep Commands

Find using:

List all files and folders in the current directory and sub-directories

Find.

/homefind filenames ending in. txt under directory

" *.txt "

Ditto, but ignores case

" *.txt "

Find all files ending in. txt and. pdf under the current directory and subdirectories

" *.txt " " *.pdf "  "*.txt" "*.pdf "

Match file path or file

" *local* "

Matching file paths based on regular expressions

" . *\ (\.txt\|\.pdf\) $ "

Ditto, but ignores case

" . *\ (\.txt\|\.pdf\) $ "

Negative parameters

Find files that are not ending with. txt under/home

! -name "*.txt"

Search by File type

Type parameter

Type parameter list:

• F Common Files
• l Symbolic connection
• Catalog D
• C -character device
• b -block equipment
• s socket
• P Fifo

Deep search based on directory

Down maximum depth limit is 3

-maxdepth 3 -type F

Search for all files with a depth distance of at least 2 subdirectories in the current directory

-mindepth 2 -type F

Search by file timestamp

Time stamp

The Unix/linux file system has three timestamps per file:

• Access Time (-atime/days,-amin/minutes): The user's last access time.
• modification Time (-mtime/days,-mmin/minutes): The last time the file was modified.
• Change Time (-ctime/days,-cmin/minutes): File data elements (such as permissions, and so on) last modified time.

Search for all files that have been visited in the last seven days

-atime-7

Search all files that were visited exactly seven days ago

-atime 7

Search for all files that have been accessed for more than seven days

-atime +7

Search for all files with access time exceeding 10 minutes

-amin +10

Find all files that have been modified longer than file. log

-newer File.log

Match based on file size

File size Unit

File size unit:

• B --block (512 bytes)
• c --byte
• W --word (2 bytes)
• k --Kbytes
• M --MBytes
• G --gigabyte

Search for files larger than 10KB

-size +10k

Search for files less than 10KB

-size-10k

Search for files equal to 10KB

-size 10k

Delete a matching file

Delete all. txt files in the current directory

-delete

Match by file permissions/ownership

Search for files with permission 777 under current directory

-perm 777

Find php files with permissions not 644 in the current directory

! -perm 644

Find all files that the current directory user Tom owns

-user Tom

Find all files owned by the current directory user group sunk

-group sunk

Use -execOptions are used in conjunction with other commands

Locate all root files in the current directory and change ownership to user Tom

chown Tom {} \;

In the example above,{} is used in conjunction with the -exec option to match all files and then be replaced with the corresponding file name.

Find all the. txt files in your home directory and delete them

RM {} \;

In the example above,-ok and -exec behave the same, but it gives a hint as to whether to perform the appropriate action.

Find all. txt files in the current directory and stitch them together to write to the All.txt file

Cat {} \;> All.txt

Move the. log file from 30 days ago to the old directory

CP {} old \;

Find all. txt files in the current directory and print them as "file: File name"

Find. -type f-name "*.txt"-exec printf "File:%s\n" {} \;

Because multiple commands cannot be used in the-exec parameter in a single-line command, the following methods can be implemented to accept multiple commands after-exec

./text.sh {} \;

Search but jump out of the specified directory

Find all. txt files in the current directory or sub-directory, but Skip subdirectories SK

-prune -o-name "*.txt"-print

Find other tips for collecting

To list all files of zero length

-empty

1486451

Http://man.linuxde.net/find

Linux Find,grep Commands