This command technically walks through directories tree on the file system. It can be used to find directory and file matched with RegEx patterns.
General syntax for find
command:
$ find [OPTIONS] [PATH...] [EXPRESSION]
Search for specific file in a directory
find ./ExampleDir -name example.txt
With the -name
parameter, this command will attempt to search for a example.txt
within the ExampleDir
directory; and if found, will return path to the file.
Find and list files of same extension
find ./dirname -name *.txt
This command will search, within the ExampleDir
directory, all files ending with the extension .txt
. If found, each result will be returned in a new line.
Find and list empty files and empty sub-directories
find ./ExampleDir -empty
This command, with the -empty
parameter, will find and list all empty files and empty sub-folders inside the ExampleDir
folder.
Definition of empty file being 0 bytes filesize, and empty folder being no files or files with 0 bytes.
Find and list files that contain specific text
find ./ExampleDir -type f -name "*.txt" -exec grep 'Example' {} \;
This command searches for the word/string “Example” inside files with the extension .txt
inside ExampleDir
dierctory.
Find and list files and sub-directories own by specific user
find ./ExampleDir -user ubuntu
This command, with the -user
parameter, will find files and sub-directories owned by Ubuntu
user in ExampleDir
directory. If found, the filename(s) will be returned.
In the following sample ls -l
result:
-rw-rw-r-- 1 newone ubuntu 20 Jan 27 06:24 example.txt
newone
represents group name, and ubuntu
is the user.
Find and list files and sub-directories own by specific group
find ./ExampleDir -group ubuntu
This command, with the -group
paramter, will find all files and sub-directories owned by Ubuntu
group in ExampleDir
directory. If found, the filename(s) will be returned.
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