find command done

shell/find.txt

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+Linux Command: find
+
+Blueprint:
+    find <path> <option> <file to search for>
+
+1. find <path> -name <file>
+
+    To search <file> in a given path by (-name).
+
+    '.' : current directory.
+
+2. find <path> . -name <file/directory> -type f|d
+
+    To search either file or directory only.
+
+    f: To search only for file.
+    d: To search only for directory.
+
+3. find <path> -type f|d -name <file/directory> -exec rm {} +
+
+    To remove the file being searched.
+
+    To execute the rm command using '-exec'.
+
+    -exec: It means to execute command against every item in the result.
+
+    {}: It is the placeholder for every item itself.
+
+    +: It is the termination of each iteration of command that will be executed.
+
+    \; : It also do the same thing as '+' symbol.
+
+4. find <path> -type -f -exec chmod 600 {} +
+
+
+    Problem:
+        While changing the permission of file in a directory (files can be nested)
+        we can run:
+        chmod -R 600 <path>
+        But, it will also change the permission of all the nested directory along 
+        with the parent directory passed as an argument. This result in unexpected
+        and errorious behaviour. 
+        
+        To avoid such issue we can use above find command.
+
+    Solution:
+
+    To find all the files and change the its permission.
+    If no name is passed then it will find all the file in that path.
+
+5. sudo find <path> -type f -name <file|directory> -exec truncate -s 0 {} +
+
+    To find the file in the given path and execute command truncate and reduce
+    the file size to 0.
+
+    truncate -s 0
+
+    -s: set size of file
+        For ex:
+            -s 0: set size of file to 0.