find command in UNIX

find command in UNIX --- searches a file or folder

find  -name  fileName.txt   --- will search the file in the current directory/folder and its sub folders.

or

find  .   -name  fileName.txt  

or

find  ./    -name  fileName.txt  

Output:

./ fileName.txt  

find  ./folder1   -name   fileName.txt  --- will search  the file in folder1  and its sub folders.

Output:

./folder1/ fileName.txt 

find   ./   -name  '*.txt'  --- displays  all the ".txt " files in the present folder and its sub folders.

or

find   -name   '*.txt'

Output:

Output will be something like this :

./file1.txt

./folder1/file2.txt

./folder1/folder2/file3.txt

. ..

find  -empty  ---  search empty files and empty directories, including hidden ones, from present folder and sub folders.

Output:

Output will be something like this :

./file1

./folder1/file2.txt

./folder1/folder2/file3.txt

./folderEmpty

. ..

find   -perm  777   ---  search file with the permission 777 in present folder and sub folders.

Output :

Output will be something like this :

./file1

./folder1/file2.txt

./folder1/folder2/file3.txt

.. ..

ignore case sensitivity :

find  -name  file1

Output  ------    ./file1

find  -name  File1

Output  ------    ./File1

find  -iname  File1

Output  ------   

./file1

./File1

find -type d   ----  finds directories only in present folder and sub folders, includes hidden also.

find -type d -name  'dir*'  --- finds directories in present folder and sub folders , name starting with "dir" , includes non hidden directories inside hidden directories  also but not hidden folder alone.

find  -type  d  -name  '. *'  --- finds  hidden directories only in present folder and sub folders.

To create hidden directory : mkdir  .folderName

To switch to hidden directory : cd .folderName

To switch back from the hidden folder : cd ..

find  -type  f   --- find only files in present folder and sub folders.

find . -type f -name "FileName1" -exec rm -f {} \;  --- deletes the file FileName1 from present directory and its sub directories.

find   -user   Ram   --- finds files and folders belonging to the user Ram in present folder and sub folders, use  " -type  f"  if you want only files.

find   -group  AAA   --- finds files and folders belonging to the group AAA in present folder and sub folders, use  " -type  f"  if you want only files.

file modified/accessed  n days before :

find   .  -type  f   -mtime   5  --- displays files modified  5 days before.

find   .  -type  f   -atime   5  --- displays files accessed   5 days before.

AND operation:

find . -type f -mtime 5  -atime 10

OR operation:

find . -type f -mtime 5  -o   -mtime 10

find   -name   '*.txt'    -o    -name    '*.out'  --- find files with extensions ".txt" or ".out"  from  current directory or sub directories

find   -newer   fileName1   ---  find files newer than fileName1