linux keychain

keychain application. -To learn more about SSH, Carlos recommends O 'Reilly's SSH, The Secure Shell: The Definitive Guide (O 'Reilly Associates, January 1, 2001 ). -The Snort intrusion detection system (IDS) is the best open-source product designed to detect and report unauthorized access or suspicious behavior. If you are planning to automate the signing and encryption of archive files, you must use an IDS. -You can use GNU Privacy Guard (GnuPG), O

First, Reason:Before because the server can only login, and limit the root account login, so ssh through all the server, to achieve the public key forward SCP free password, etc., greatly facilitate the management of the server.Recently there is a need to do offsite backup of data. The simplest use of SCP script, but script manual execution is OK, put crontab does not work properly.Second, the solution:Script execution failed, immediately thought to print verbose log debug, that scp-v then read

, rather than the norm of one ssh-agent per login session.This dramatically reduces the number of times you need to enter your passphrase. With keychain, the need to enter a passphrase once every time your local machine is rebooted. Keychain also makes it easy for remote cron jobs to securely "hooks in" to a long-running ssh-agent process, allowing your Scripts to take advantage of key-based logins.Restrict

In Linux or Unix-like systems, each user and process is running in a specific environment. This environment contains variables, settings, aliases, functions, and more. Here is a brief introduction to some of the common commands in the shell environment, including examples of how each command is used, and setting your own environment at the command line to improve efficiency. Find your current shell. Enter any of the following commands in the termi

Detailed Mac hard drive folders (add Linux part reference ★ Detailed Mac hard disk in each folder Ways to show hidden files With the "terminal", the advantage is that no third-party tools are required, the downside is that if the command is wrong, there will be side effects. The commands are as follows (note the spaces in them): Showing: Defaults write Com.apple.finder appleshowallfiles-bool true Hiding: Defaults write Com.apple.finder Appleshowallf

Linux services)It is important for Linux users. Disabling unnecessary services can make Linux run more efficiently, but not all Linux services can be disabled. After installing centos Linux today, we found that many services were started when

Linux-(2) Basic file operations in Linux, linux-linux In linux, everything is files, directories are files, and hardware is files. Therefore, basic file operations are especially important. 1. List the contents of the directory: Ls Parameters: -A: displays all files (includ

Logout Exit SystemGedit Text Editor ToolsUname–r View kernel version information, uname–a more detailsCat/proc/cpuinfo viewing CPUsCat/proc/meminfo Viewing memoryHostname Viewing host namesIfconfig eth0 view eth0 IP AddressAlias ls= ' ls–ll ' setting aliasesTo view the path of the current terminal: TTYView current Shell:echo $SHELLAll Shell:cat/etc/shells under the current systemView CentOS System hostname Format: Echo $PS 1Distinguish internal or external commands: Type CDWhich find the locatio

. As we all know,linux system everything is a file, so each process has its file descriptor, The Nginx process writes its own file descriptor to the Nginx.pid, and we need to tell Nginx to reopen a new log file (the configuration details of the log file can be seen here, simply by letting the log record what. So we need this directive:kill -USR1 `cat ${pid_path}`This instruction means: first cat to Nginx PID, is an integer, and then send the signal

Downloadwget http://.....tar.gzExtractTAR-ZXVF xxx.tar.gzcd XXX./configure--prefix=/usr/local/xxx--with-x=/usr/local/xCompileMakeInstallationMake installNginx Start/usr/local/nginx/sbin/nginx Stop/usr/local/nginx/sbin/nginx-s Stop Focus/usr/local/nginx/sbin/nginx-s Reload httpd start, shut down, restart/usr/local/http/bin/apachectl-k [Start | stop ...]Find processPs-ef|grep xxx The above describes the Linux installation software memorandum, i

Becoming a Senior Programmer proficient in Linux programming has always been the goal of many friends. According to statistics from chinacache, the monthly salary of Linux programmers in Beijing is 1.8 times that of Windows programmers, 2.6 times that of Java programmers, and 2.9 times that of Windows programmers. At the same time, the data shows that with the increase of work experience, the income gap bet

Tags: System ops LinuxBasic knowledge of computer playing:CPU (operator, Controller), memory, I/O (input device, output device)程序运行模式： 用户空间：user space,us （可执行普通指令） 内核空间：system space （可执行特权指令）POS：Postable Operating System 可移植操作系统 POSIX 可移植操作系统规范运行程序格式：Windows：EXE，库文件dll（dynamic link library 动态链接库）Linux：ELF，库文件so（shared object 共享对象）程序：指令+数据 指令：只读 数据：读写程序：算法+数据结构库调用，系统调用：允许被调用的程序；malloc() 申请内存空间；free() 释放内存空间；编程语言 汇编语言：微码编程（系统级程序员） 系统中某些于硬件相关的特有代码、驱动程序开发； 高级语言：C、C++

This series of articles summarizes Linux network stacks, including:(1) Linux Network protocol Stack Summary(2) Network multipart offload technology Gso/tso/ufo/lro/gro in non-virtualized Linux environment(3) QEMU/KVM Network multipart offload technology in virtualized Linux environment Gso/tso/ufo/lro/gro1.

1, what is Linux? To be exact, the Linux kernel (the core program of the system), whose kernel copyright belongs to Linus Torvalds, is issued under the GPL (GNU general public License) Copyright Agreement, and anyone can copy (copy) and modify ( Change), package distribution (distribute), sales, but can not add any restrictions at the time of distribution, and all the original code must be public, so anyone

as follows: 1) VI mytask.sh Enter the following command Date>>/home/mydate3 Cp/home/mydate3/root 2) Grant mytask.sh Execute permission chmod 744 MYTASK.S H 3) Crontab-e 4) Re-enter the command: * * * * * */root/mytask.sh. (3) How to terminate a task crontab-r means to terminate a task schedule. After the command is executed, the tasks in the crontab-e are removed. CRONTAB-L indicates which task schedules are currently in the list.2, the Linux proces

HTTP://WWW.IBM.COM/DEVELOPERWORKS/CN/LINUX/L-LSM/PART1/1. Related background: Why and whatIn recent years, Linux system has been widely concerned and applied by computer industry because of its excellent performance and stability, the flexibility and expansibility of open Source feature, and the lower cost. But in terms of security, the Linux kernel only provides

Deploy War packages for Linux tomcat, deploy JavaWeb projects for Linux Tomcat, deploy War packages for Linux, and deploy tomcatjavaweb Deploy the War package for Linux tomcat, deploy the JavaWeb project for Linux Tomcat, and deploy the War package for

Create a small Linux with network functions First, copy the required basic network commands to a Linux instance.Copy Ping and ifconfigTo add a network function, you must be driven by the NIC. The NIC Driver is pcnet32.However, pcnet32 has a dependency module that is MII, and MII has no dependency module,So we only need to copy the two modules to ourIn Linux, chec

Never use Linux commands! | Linux China, linux ChinaYou only need a stupid move. You can even destroy a company worth billions of dollars, Just Like Apache Struts without patching. -- Steven Vaughan-Nicolas In this article, navigate to rm-rf/11% faster fork bomb 39% faster junk data rewrite hard disk 47% faster erase hard disk! 54% Bytes/dev/null loss 63% bytes f

apt-get install openssh-client=1:6.6p1-2ubuntu1正在读取软件包列表... 完成正在分析软件包的依赖关系树 正在读取状态信息... 完成 建议安装的软件包：libpam-ssh keychain monkeysphere下列软件包将被【降级】：openssh-client升级了 0 个软件包，新安装了 0 个软件包，降级了 1 个软件包，要卸载 0 个软件包，有 0 个软件包未被升级。需要下载 566 kB 的软件包。解压缩后会消耗掉 0 B 的额外空间。您希望继续执行吗？ [Y/n] y获取：1 http://cn.archive.ubuntu.com/ubuntu/ trusty/main openssh-client amd64 1:6.6p1-2ubuntu1 [566 kB]下载 566 kB，耗时 2秒 (212 kB/s) dpkg：警告：downgrading openssh-client from 1:6.6p1-2ubuntu2 t