linux check uptime

Http://hi.baidu.com/jtntiivtemcnsue/item/90689ce172ee912c5a7cfb1b People who have written MS-DOS programs usually look for functions in Linux that are equivalent to kbhit, which will detect whether a key is pressed and not actually read. Unfortunately, they did not find such a function, because there is no directly equivalent function. UNIX programmers do not notice this omission, because the Unix programming method is usually prepared for the progra

Linux intrusion check utility command 1 can get the process where filename is running # pidof filename2 can see the process through the file or tcp udp protocol # fuser-n tcp port3 can see the file modification time, size and other information # stat filename4 check the loading Module # lsmod5 check the rpc service ope

the MD5 Signature of the important case. If there are differences, it indicates that the case has been changed, at this time, we naturally need to understand why it is more active.With this feature, rkhunter has collected the MD5 distribution of important Linux distributions cases (such as login, ls, PS, top, W, and so on), and finally, when we have prepared rkhunter and completed the operation, he will use the original information to compare the dat

Linux workstation security check list Target readers This document is intended for users who use Linux workstations to access and manage system administrators in the project infrastructure team. If your team's system administrator is a remote engineer, you can use this document to help them ensure that their workstation meets the most basic security requirements

Memory UsageOn Linux, there is commands for almost everything, because the GUI might is always available. When working on servers only the shell access is available and everything have to be do from these commands. So today we shall is checking the commands that can is used to check memory usage on a Linux system. Memory include RAM and swap. It is often importan

The number of CPU instruction sets have kept growing, and likewise for the operating systems which is able to run and supp ORT on more than one CPU system architecture. For example, a Linux OS such as Ubuntu, Fedora, Redhat, Linux Mint, Debian, Arch Linux, OpenSUSE and CentOS can run on Int El or AMD CPU in either 32-bit or 64-bit flavor. In addition, some

MD5 when installing third-party files. There will be a lot of 5 or missing prompts during the operation. If it is not the above pass directory, do not pay too much attention 6. Network Check # Ip link | grep PROMISC The normal Nic should not be in promisc mode, except for the security server. Otherwise, someone may intrude into the sniffer. # Lsof-I # Netstat-nap Check the TCP/UDP ports that are not norma

How does php check the synchronization status of mysql in linux? linuxmysql. How php detects the synchronization status of mysql in linux. This article describes how php detects the synchronization status of mysql in linux. Share it with you for your reference. The specific analysis is as follows: how does php

Article Title: How to check whether a Linux server is under attack. 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. The guy from huicong security network, also known as the "script

Article Title: Check whether the Linux operating system is properly mounted to the hard disk. 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. Whether or not the

Check the system password file and check the file modification date. [Root @ fedora ~] # Ls-l/etc/passwd View privileged users in the passwd file [Root @ fedora ~] # Awk-F: '$3 = 0 {print $1}'/etc/passwd Check whether there is a blank password account in the system. Awk-F: 'length ($2) = 0 {print $1} '/etc/shadow Check

./newSwapFileswapon ./newSwapFile We can take swapon -s a look at the current number of swaps that are being mounted usingIt can also be used swapoff to remove a swap partition that is in use within the system.You can use the free command to view swap usage in the system (total, usage, remaining) System ID Under Linux, each filesystem has a corresponding ID, chewing the mouth. System ID-Linux