df unix

The following is LINUX/HP Unix/aix daily patrol script, you can refer to the rewrite, for their own server.#!/usr/bin/kshSyserrdate= ' date + '%m/%d 'Errcount=0status=Hosts= ' hostname 'Script= ' basenameReport= "/tmp/report.txt"#FS percentFilesystem_check () {fs= ' df-k|sed ' 1d ' |awk ' sub ("%", "", $4) {if ($4 >) print $7} ' |xargs 'For I in $FSDoecho "The $i filesystem percent more than%80 n"Done}#Acti

Ken milberg, Writer/website expert, future tech January 04, 2010 UNIX History UNIXOriginated in the late 1960s S. Ken Thompson joined the Bell lab's computer research division in 1966. He was initially engaged in multicsProject, an ambitious project that strives to create a next-generation portable operating system, but eventually fails. Dennis Ritchie is at 1968He joined Bell Labs in and was initially engaged in multics. This project, with th

Many new Linux beginners are concerned about the differences between Linux and windows. here is the difference between Linux and UNIX. figuring out some differences will help us understand the operating system. the difference between LinuxUnix is described here. the biggest difference between Linux and UNIX is that the former is free software for source code development, while the latter is concerned about

At present, Windows operating systems have occupied desktop computers, while UNIX still plays an irreplaceable role in the field of high-end workstations and servers. Especially for Internet servers, the high performance and high reliability of UNIX are not comparable to those of Windows NT computers. However, UNIX is not a separate product of a manufacturer. In

, shutdown, halt, reboot, install, mount, umount, chsh,Exit, last;◆ File processing commands: file, mkdir, grep, dd, find, mv, ls, diff, cat, ln;◆ System management commands: df, top, free, quota, at, lp, adduser, groupadd, kill,Crontab;◆ Network operation commands: ifconfig, ip, ping, netstat, telnet, ftp, route, rlogin, rcp,Finger, mail, nslookup;◆ System security related commands: passwd, su, umask, chgrp, chmod, chown, chattr, sudo ps,Who;◆ Other

core function. In fact, the principle is to call a tar command package compiled in windows through the command prompt cmd on Windows. The contents of this package are as follows: In fact, it uses the cygwin1.dll component to convert the tar command on UNIX to run on Windows. This package will be provided at the end of the article together with the tool and source code. We can see that in Compress, we use"Cd" commandIn this example, you need to set t

Unix is linux's ancestor difference and connection LinuxisafreeUnix-typeoperatingsystemoriginallycreatedbyLinusTorvaldswiththeassistanceofdevelopersaroundtheworld.Developedunder... Unix is the historical difference between linux and Linux is a free Unix-type operating system originally created by Linus Torvalds with the degree of developers around the world. deve

Identifying whether a UNIX system has been compromised requires a high level of skill and, of course, some very simple methods. The easy way to do this is to check the system log, the process table, and the file system to see if there are any "strange" messages, processes, or files. For example: Two running inetd processes (should have only one); SSH runs in root euid instead of root UID; RPC Service core file under "/"; new Setuid/setgid program; fas

When learning open-source operating systems, we often see Linux and UNIX. Do you know about them? This article introduces you to Linux and UNIX. The biggest difference between the two is that the former is the Free Software for source code development, while the latter is the traditional commercial software that implements intellectual property protection for source code. This should be their biggest differ

SECURECRT is the most commonly used terminal emulator, the simple is that Windows under the UNIX or LIUNX server host software, this article mainly introduces the use of SECURECRT methods and techniquesThe Vandyke CRT and Vandyke SecureCRT are the most commonly used terminal emulators, simply the software that Windows logs on to UNIX or Liunx server hosts. The difference is that SECURECRT supports SSH (SSH1

1. display cpu quantity: hp-unix: ioscan-Cprocessor | grepprocessor | wc-lSolais: psrinfo-v | grep quot; Statusofprocessor quot; | wc-llinux: cat/proc/cpuinfo | grepprocessor... 1. display the number of CPUs: Hp-unix: ioscan-C processor | grep processor | wc-l Solais: psrinfo-v | grep "Status of processor" | wc-l Linux: cat/proc/cpuinfo | grep processor | wc-l AIX: lsdev-C | grep-I processor | wc-l 2. dis

The title of the article: understanding the past before you can know it: Unix legends. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Only by understanding the past can we know and understand it. In conclusion, we will know how to plan and how to proceed tomorrow. In the scroll wheel of time, many things are just

Oracle Learning Starter Series III UNIX, Linux history and fundamentalsFinally over the previous two, drink a cup of coffee to carry God, we continue to move forward. This time we have to carry out the operating system knowledge, considering the current time of the operating system diversity, variability, and so on, Toad weighed, decided or unix/linux more in line with our reality.Before you start, you have

What is LinuxThe same set of operating systems cannot be run on a platform of different architectures.Refer to the HARDWARE function function and modify your operating system program code, the revised operating system will be able to run on another hardware platform. This is the software migration .Linux is an open-source operating system, so its program code can be adapted to run on a variety of machines. Linux is portable .Linux provides a complete architecture of the lowest level of hardware

Linux is a free UNIX-type operating system originally created by Linus Torvalds with the degree of developers around the world. developed under the GNU General Public License, the source code for Linux is freely available to everyone. click on the link below to find out more about the operating system that is causing a revolution in the world of computers. The biggest difference between Linux and UNIX is t

Chen Hao Many programming friends asked me a few questions on the Internet. How do you learn Unix? How is Unix so difficult? How can we learn well? And let me give them some experience in learning Unix. In most cases, I found that my friends who asked these questions have two characteristics: 1) be afraid of Unix and h

Computers, computers have become an essential part of our lives. Whether it is a large supercomputer, or a mobile phone-like small terminal equipment, all running an operating system. It is these operating systems that let those hardware and chips proudly combine to allow the software to run, allowing our world to enjoy life again and again in the field of technology.The operating systems we know are probably all Windows series, and Apple's success in recent years has allowed MacOS to step into

I. INTRODUCTION Unix system, as a powerful multi-user time-sharing operating system, has been applied in more and more occasions, and the requirements of UNIX system management are more and more, but the current Books on UNIX system management commands are not many. This article is primarily for UNIX system administrat

Because of the well-known stability and reliability of Unix operating systems, the computers used to provide a wide range of Internet services run a large percentage of Unix and Unix-like operating systems, requiring a large number of skilled UNIX-type operating system applications. The most common

Unix UNIX Virtual machine model The concept of using and designing virtual machines is an effective way to build interactive, robust virtual devices. This method can be used to solve many problems faced by computer engineers. In Unix operating systems, the concept and process model of virtual machines are highly unified. The