Finding & processing the file

• Find /etc/ passwd = to search a passwd details
• Find /etc -size 1024k (small k) = to search a all files 1024k at a time
• Find /etc -size +1024k= to search & show a more than 1024k files
• Find /etc -size -1024k = to show a less than 1024k all file
• Find /home – user student = to search file by user name
• Find /home – group student = to search by group name
• Find /etc –perm 755 = to search a file permission
• Find /etc - perm -222 = it means every one should have write permission
• Find /etc +perm +222 =any one can have a write permission
• Sign “ - ” it’s mean Anding
• Find /home -user student -a root
• Find /home -user student -o root

# Time stamp

A timestamp is a sequence of characters or encoded information identifying when a certain event occurred, usually giving date and time of day.

Stat install.log = showing file details about install.log , like that…

File: `install.log'

Size: 42639 Blocks: 96 IO Block: 4096 regular file

Device: 802h/2050d Inode: 15 Links: 1

Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)

Access: 2013-05-30 19:39:34.320710515 +0530

Modify: 2013-05-28 18:22:11.433160238 +0530

Change: 2013-05-28 18:22:22.609701016 +0530

Touch = DESCRIPTION :- Update the access and modification times of each FILE to the current time.

Example :- touch…..file name

-a change only the access time

-m change only the modification time

-t STAMP = use [[CC]YY]MMDDhhmm[.ss] instead of current time

Find /etc -a time +/-5 = it’s showing 1 to 5 days

Find /etc -atime 5 = showing a details in a /etc file

# inode

Definition :- inode is a unique number assign of a file or a directory to identified by the kernel .

Inode number to store a metadata of the file

An inode (index node) is a data structure found in many Unix file systems. Each inode stores all the information about a file system object (file, device node, socket,pipe, etc.), except data content and file name

Find -I num 6672 (inode number)

# Processing a file

• - ok ------|
• - | connect two character & two command at a time using this operator
• - exec |
• { } --------| curly base ( this is a place holder source )

Example 1 , find /home –user student -exec cp -rf {} /data \ ;

(Where rf stands r= recursively , f = forcefully)

 Example2, find /home –user student -ok cp {} /data \ ;