First we need to install the FTP server under the Linux system Ubuntu sudo apt-get install .... CentOS Yun .....Then we want to configure the vsftpd.conf file sudo vim/etc/vsftpd.confAdd the following configuration Anonymous_enable=yes (Allow
After 1.alarm () execution, the process will continue to execute and will receive a signal sigalrm after seconds seconds and execute its handler function during the execution of the post (alarm).#include #include #include void sigalrm_fn (int sig)
The basic composition of Linux has been talked about before. The Linux kernel is the core of the system, controlling how memory, programs, and hardware interact with each other. The GNU tool chain is also an important part of the Linux system. Now
Ps-aux | grep 8080Use command: NETSTAT–APNView all process and port usage. Discover the following list of processes, where the last column is pid/program name8080 ports were found to be occupied by the Java process with PID 9658.Further use of the
1, definition: refers to the automatic implementation of the prescribed procedures according to the time set;2, Two ways: (1) routine, every certain period of time to be done by the matter;(2) Sudden, after this time there is no one, such as the
The first thing to say is that Linux is a good system--of course, for people with a certain foundation.The two days began to teach students to use Linux, because it is easy to choose CentOS 6 as a server, and it is an experiment in a virtual machine.
See a total of three methods on the Web, here are only the simplest one--Modify the/etc/rc.local file:1) under the command line, cut to the ETC directory and enter the command: sudo gedit rc.local2) at exit 0 of the last line of the rc.local file,
For file
R can read the actual contents of the file
W can edit the contents of the file
X files can be executed by the system
For directory
R has a list of structures that read the directory, which means you can use the LS command
Overview-In Linux, each executed program is called a process and each process is assigned an ID number-Each process corresponds to a parent process that can replicate multiple child processes, such as the WWW server-Each process can exist in two
1,/etc/issueUsage: When we log in at the terminal interface, there will be a few lines of hint string, then this string is set in/etc/issue.eg [[email protected] ~] #cat /etc/issue centos Release 5.6 (Final) kernel \ r on an \m [Email
generate public keys and keys on client sideExecute on client side command linessh-keygen-t-P‘‘Then hit enter to generate both the public key and the keyAdd the client's public key to the Server-side public key file for authenticationThe steps are
Reference URL:Http://wenku.baidu.com/view/4339434bc850ad02de80419c.html?re=viewThe root user cannot log on by FTP and displays 530 Permission denied.1, CD/ETC/VSFTPD2, vi ftpusers, VI user_list, all delete "root" this line3, vi vsftpd.conf, will
first, take a look at the helpUSAGE:WC [OPTION] ... [FILE] ...OR:WC [OPTION] ...--files0-from=fPrint newline, Word, and byte counts for each FILE, and a all line ifMore than one FILE is specified. With no file, or if file is-,read standard input.-C,-
Data source: Linux Process monitoring SuperviseSupervise is a daemontools tool that can be used to monitor the operation of applications running under UNIX, and supervise can restart the specified program when an application exception occurs. Use:
system Callsthe so-called system call refers to the operating system provided to the user program calls a "special" interface, the user program through this set of "special" interface to obtain the service provided by the operating system kernel.
4.4 Linux Common Commands-File Search command-HELP command man gets help informationMan ls to view the Help information for LS commandMan Services View configuration file Help information1 Help for commands5 configuration file HelpCommand NAME
Linux Command type
1. Linux built-in commands: commands provided by shell programs. The most common Commands include cd and pwd.
You can use the type command to view which command belongs, for example:
# Type cd
Cd is a shell builtin ----> if
Caffe installation in 64-bit Ubuntu 14.04
Caffe has been installed many times recently for various reasons, and the installation process is a lot of pitfall. To save time for new users, I would like to summarize the entire installation process.
NFS for CentOS
NFS is an old protocol, and it has been constantly updated and improved in Linux. Previously, it only supports UDP, TCP, and V4. But it is still insecure. The biggest problem is that identity authentication is not required. We
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