linux audit file changes

Each file and directory in a Linux system has access permissions, which are used to determine who can access and manipulate files and directories.Access to a file or directory is divided into read-only, write-only, and executable three types. As an example of a file, a read-only permission means that only the content i

The basic usage of the Linux zip command is:Zip [parameters] [file name after packaging] [packaged directory path]Linux zip command parameter list:-a convert the file to ASCII mode-F attempt to repair corrupted compressed file-H Display Help interface-M after compressing the

descriptive descriptor, regardless of whether the two file descriptors belong to a different process or the same process. This is the case.3. To get and change the open file flags (for example: O_append, O_nonblock, and O_async), you can run the F_GETFL and F_SETFL operations of Fcntl (), which have a similar constraint on the scope as the previous one. 4. Document descriptive descriptor flag (ie. CLOSE-ON

Linux File Search-find command, linux search-findFind command: used to search for and process files in the file tree 1. find command format; Find pathname-options [-print-exec-OK...] {} \ 2. Parameters of the find command; Pathname: directory path searched by the find command. For example, "." is used to represent the

mknod command is used to create a device file. The command is used as "mknod device file name [bcp] [Major] [Minor]". Each file system has a file system Label, which can be specified when the file system is formatted (mkfs) or modified using the e2label command. E2label is

Common compression commands for Linux systems:In Linux, the zip file extension is mostly: "*.tar, *.tar.gz, *.tgz, *.gz, *." Z, *.bz2 "Linux supports a very high number of compression commands, and different commands use compression techniques that are not the same, and may not be able to compress/decompress files with

The meaning of directory and file permissions in Linux The meaning of file permission R: You can read the specific contents of this document; W: You can edit the contents of this file, including adding the details of the deleted file; X: The

A few common concepts about the Linux directory PathThe description mechanism of the file location information refers to a path from a directory hierarchy in the tree directory to a file within it, and is divided into relative paths and absolute paths; working DirectoryOnce logged into the system, the user is always in a directory, which is the worki

fork the new proc exception because of the maximum process 1024 limitMaximum number of processes to unlock a Linux systemMethods are as followsVim/etc/security/limits.d/90-nproc.conf# Add the following line* Soft Nproc 102400Root Soft Nproc 102400Ulimit the hard limit is the actual limit, and the soft limit, is the warnning limit, will only make warning, in fact, the Ulimit command itself is divided into soft and hard settings, plus-H is hard, plus-s

This article summarizes the commands needed to manage our hard drives and file systems in the Linux operating system. When we add a hard drive to our system, what steps do we have to go through to actually use the drive? This can be roughly divided into the following steps:(1) partition the disk, create a new partition that can be used;(2) format the partition and format the partition as a

://host2:port2/file2 Hadoop Fs-cat File:///file3/user/hadoop/file4 return value:successful return 0, Failure returns-1. 2:chgrpHow to use: Hadoop fs-chgrp [-R] GROUP uri [uri ...] Change Group Association of files. with-R, make the change recursively through the directory structure. The user must be the owner of files, or else a super-user. Additional information is in the Permissions User guide.-->Change the group to which the

gets crazy when you encounter problems. There are two types of devices in Linux: character devices (unbuffered and sequential access only) and block devices (with buffering and random access ). Each character device and block device must have the primary and secondary device numbers. devices with the same primary device numbers are similar devices (using the same driver ).Program). Among these devices, some devices are abstract to the physical hardw

common types of files in Linux are:"-" means normal file:-rw-r--r--1 root root 41727 07-13 02:56 install.log"d" means directory: Drwxr-xr-x 2 root root 4096 07-13 03:18 Desktop "B" represents a block device file: Brw-r-----1 root disk 8, 0 07-13 05:57/DEV/SDA "C" means the character device file: Crw-rw-rw-1 root TTY 5,

With the evolution of high-performance computing from traditional host to networked cluster, the traditional host-based storage architecture has gradually developed to networked storage, and the trend of computing and storage separation is becoming more and more obvious. A new file system for Linux clusters has been launched internationally for the lack of SAN and NAS --Object storage

files in a group, it supports wildcards. 　　Each file and directory in a Linux system has access permission to determine who can access and manipulate files and directories in any way. Access rights specify three different types of users: the file Master (owner), the same group of users (groups), and other users who can access the system (others). 　　Access rights

Tags: changing which properties single character size chmod command summary no data foundPrevious Blog We explained the Linux Link command and Rights Management commands, through the LN-S link name to create a soft link, no-s means to create a hard link, there are three changes to the permissions of the command, chmod command can change the file or directory perm

already exists and is directly overwritten, but prompts the userIf Dest does not exist, copy the src file and change the src name to DestIf Dest is an existing directory, copy src to the dest directory, keeping the SRC nameIf Dest is a nonexistent directory, then error, directory does not existIf SRC is multiple filesIf the target is present and is a file, the error indicates that the directory does not ex

JFS is a log file system developed by IBM for Linux systems. From IBM's strength and its attitude towards Linux, JFS should be the most powerful file system in the future log file system. JFS provides a log-based byte-level file s

Linux/etc/fstab file, linuxetcfstab FileI. Role /Etc/fstab is a file used to store the static information of the file system. When the system starts, the system automatically reads information from the file, the specified file sys

linux CP command parameters and usage details---linux copy file command CP [[Emailprotected]linux ~]# cp [-adf ILPR su ] source file (source) destination archive (destination) [[Emailprotected]linux ~]# CP [options] Source1