Find command, find

Find command, find
Syntax

Find [Option] [path...]

Option

Option	Description
-Help or -- help	Online Help
-name <pattern>	Shell Mode<pattern>Match the file name. <pattern>It can be enclosed in quotation marks or not, but it is best to enclose it in quotation marks.
-iname <pattern>	Similar to-name, but case-insensitive
-Ls	List file or directory names to standard output
-exec command ;	Run the command. For detailed usage, see the following-exec command ;Description
-type <c>	Only find files that match the specified file type. c is a character.
-Prune	If the file is a directory, it will not enter this directory
-regex <pattern>	Use a regular expression to match the file name. This only matches the full path of the file, not the file content.
-regextype <type>	Change the regular expression syntax that is understood by the-regex and-iregex tests that will appear later in the command line. Currently implemented<type>Emacs (which is the default one), posix-awk, posix-basic, posix-UNK p, and posix-extended.
-Print	List file or directory names to standard output. The format is one name for each column, and each name is preceded by a "./" String

Example: list all files and folders in the current directory and subdirectory

find .

Find the. java file in the current directory

find . -name "*.java"

Search for all. java and. cpp files in the current directory and subdirectory

find . -name "*.java" -o -name "*.cpp" 
find . \( -name "*.java" -o -name "*.cpp" \)

Or use a regular expression.

find . | egrep ".*(\.java|\.cpp)$" 
find . -regextype "posix-egrep" -regex ".*(\.java|\.cpp)$"

Find the files in the current directory that do not end with. cpp

find . ! -name "*.cpp"

Search by file type

Find.-type <type parameter>

Type parameter	Description
F	Common File
L	Symbolic Link
D	Directory
C	Character Device
B	Block Device
S	Socket
P	Pipe FIFO

Delete matching files

find . -type f -name "*.class" -delete

Find all. java files in the current directory, but skip the subdirectory chapter02

find . -path "./src/com/fireway/util" -prune -o -name "*.java" -print

-exec command ;Usage instructions

-execThe option is followed by the command or script to be executed, followed by a pair of braces{}, A space, and a backslash\Add a semicolon. Because the semicolon;It has special significance in the bash environment, so it uses the backslash to escape.

{}Curly braces indicate the names of the files found by the previous find. 
Example:

find . -exec ls -l {} \;

Example: Delete

find . -exec rm -rf {} \;

For example, rename all the current Android. mk files to Android. mk_bak.

find . -name "Android.mk" -exec mv {} {}_bak \;

But one bad thing is that you can only add a suffix to the backend.
For example, if you want to change the suffix. class to. clazz, you can write a shell script.

for file in $(find . -name "*.class" -type f); do mv ${file} ${file/.class/.clazz}; done

For more information about how to replace shell variables, see "shell variable details.

Use find in combination with xargs

Note that xargs is a separate command, not an option in find.

References

• About the '-- exec' parameter (find command) and introduction to the differences between the 'xargs 'command (new version)
• Find command
• Find batch RENAME [change]
• Shell variable details
• How to use regular expressions in the linux find command
• Xargs command