linux audit file changes

-atime N: Find the last n*24 hour Access file in the system-cmin N: Find files in the last n minutes of the system changed file status-ctime N: Find files in the system that last n*24 minutes were changed file status-mmin N: Find files that have changed file data in the last N minutes of the system-mtime N: Find files

Each file and directory in a Linux system has access permission to determine who can access and manipulate files and directories in any way. File or directory access is divided into read-only, write-only and executable three kinds. In the case of a file, read-only permission means that only its contents are allowed, a

linksIn general, the file name and inode number are the "one by one correspondence" relationship, and each inode number corresponds to a file name. However, the Unix/linux system allows multiple filenames to point to the same inode number.This means that the same content can be accessed with different file names, and

)Head-n Number FileNumber is row count2 tail (take back a few lines)Tail-n Number File-N: followed by a number that represents the meaning of a few lines-F: Indicates continuous detection of the following file name until the ctrl-c is pressed to end tail detectionThe default is to remove the following 10 lines of the file.4 Non-plain text documents: ODod [-t TYPE

rowDG deletes the end of the line where the cursor is locatedD Delete the end of the line at which the cursor is deleted: N,ND Delete Specified rangeCopy and Cut commandsyy, Y Copy as ForwardNyy, NY copy current row n rowsDD Cut when moving forwardNDD cut current row n rowsP, p pasted under the current cursor row or lineReplace and Cancel commandsR replaces the character at which the cursor is locatedR replaces the character at the beginning of the cursor and presses ESC to endU Cancel the prev

is a line like "# ifdef CONFIG_SMP", it will be in. output $ (wildcard/usr/src/linux/include/config/smp. h ). 　　 The file under include/config/is generated from autoconf. h by another tool split-include. it uses the CONFIG _ mark in autoconf. h to generate the file corresponding to mkdep. For example, if the autoconf. h contains the line "# undef CONFIG_SMP", it

. E2label is used as the "e2label device name new Label name". The volume name of the Linux file system is similar to a name (C or D) in each disk in the Window ). During mounting, we can also use the volume name of the file system for mounting. In CentOS, the/etc/fstab file settings use the Label name by default. What

Summary of important Linux Knowledge mdash; disk and file system management EXT2 file system: file system features: format ): the file attributes/permissions set for each operating system are different. to store the data required for these files, you need to format the part

partition). To create a new file system on a specific partition, simply type The code is as follows: sudo mkfs.ext4/dev/sdb1 At the terminal. It should be noted that MKFS.EXT4 can be replaced with any file system you want to use. PS: Adjust partitions using GPartedThe easiest way to adjust partitions in Linux is to use the GUI GParted program. Although you can r

By default, the file system used in Linux is Ext2, which is indeed efficient and stable. However, with the application of the Linux System in key services, the weakness of the Linux file system is gradually revealed. The ext2 file

receive files, secureCRT will pop up the file selection dialog box. after selecting the file, close the dialog box and the file will be uploaded to the current directory. Note: If you use rz separately, there will be two problems: the upload is interrupted, and the Upload file cha