command to check server uptime

Some basic commands can often play a big role in protecting network security, and the following commands are very important. 　　 Detecting Network Connections If you suspect your computer is being installed on a Trojan horse, or a virus, but there is no perfect tool in hand to detect whether this is true, then you can use the network commands brought by Windows to see who is connected to your computer. The specific command format is: Netstat-an This

Some basic commands can often play a big role in protecting network security, and the following commands are very important. Detecting Network Connections If you suspect your computer is being installed on a Trojan horse, or a virus, but there is no perfect tool in hand to detect whether this is true, then you can use the network commands brought by Windows to see who is connected to your computer. The specific command format is: Netstat-an This

Common commands Devices # Viewing connected devices Start-server # start ADB server Kill-server # stop ADB server Logcat # Viewing logs Install # installs an APK Uninstall # Uninstall an APK Shell # Enter Terminal Other commands Help # View the helpful information Vers

the system, a bit like a Windows Recycle Bin. To solve this problem, the simplest is to restart the server, but the production environment generally will not be easy to restart, so we can solve by other means. First use the lsof command with the grep command to find out what has been deleted, but still occupy the system space "rogue". The file in

Iostat is used to check the I/O performance of linux hard disks. recently, the company has installed several DELLPE2650 and 2850 Servers. the RHLE5.132-bit system is installed in a unified manner, while the SCSI hard disks of the servers are all RAID 1. The boss of the company asked for a unified detection report on hard disk I/O. he found many tools in Linux and found that iostat is the most practical. He needs to install sysstat first, that is, yum-

determine whether an abnormal connection exists. If yes, we need to disconnect the network for further processing. 　　2. View service running status Generally, the functions of a computer correspond to the services they provide. Therefore, many intruders will open various services after entering the computer. It can be seen that it is necessary to detect the services currently running in the system. Enter "net start" in the command prompt, and the sys

If your Linux server suddenly has a sudden increase in load, warning text messages quickly explode your phone, how to find out the Linux performance problem in the shortest time? Look at the Netflix performance Engineering team's blog post to diagnose machine performance issues with 10 commands in a minute. Today Xiao (farsight2013) to share with you.You can get a general idea of system resource usage within 1 minutes by executing the following

Dasauto-Automatically start DB2 Management Server DASCRT-Create DB2 Management Server Dasdrop-Remove DB2 Management Server DASMIGR-Migrate DB2 Management Server DASUPDT-Update DB2 Management Server Db2_deinstall-Uninstall DB2 products or functional parts Db2_install-Installi

As we all know, the database will try to cache the used data pages in memory, so that the next time you can get the use of, SQL Server is no exception. But is this also true for DBCC CHECK commands? You guess? I tested it with one of the largest tables in my test environment, 202 trillion. More Wonderful content: http://www.bianceng.cnhttp://www.bianceng.cn/database/SQLServer/ First we empty the cache

0 52 ::ffff:192.168.42.128:22 ::ffff:192.168.42.1:43561 ESTABLISHED 6198/2 [root@DB-Server Server]# As shown above, this tool does not feel as concise and clear as nmap. Of course, nmap is not powerful. 3: lsof tool detects open ports [root@DB-Server Server]# service mysql start Starting MySQL......[ OK ] [r

How to check whether a Linux server is under DDOS Attack Address: http://www.phpthinking.com/archives/427 Log on to your server and run the following command as the root user to check whether your server is under DDOS Attack:Netst

Chinese meaning is active and passive. The active connection process is that the client sends a connection request to the FTP port of the server (21 by default). The server accepts the connection and establishes a command link. When data needs to be transmitted, the server sends a connection request from Port 20 to th

First, view the log file Linux View /var/log/wtmp file view suspicious IP login Last-f/var/log/wtmp This log file permanently records each user's logon, logoff, and system startup, downtime events. So as the system uptime increases, the size of the file becomes larger, The rate of increase depends on the number of times the system user logs on. The log file can be used to view the user's logon record, and the last

system prompts "XXX cannot be accessed", "you may not have permission to use network resources", and "contact the administrator of this server to check whether you have access permissions ", similar prompts such as "network path not found. Solution: Stop the firewall or add LAN access rules. Firewall that comes with WINXP: Open Control Panel-> network and Internet connection-> Windows Firewall-> exceptions

This article describes how to check whether the local DNS server works normally and how to update it. When we access a website, we directly enter the domain name in the browser, for example, www.webweb.com, when a website fails to be accessed normally, many users instinctively think that there is a problem with the local network or the target server. However, aft

Log on to your server with the root user to execute the following command, using it you can check whether your server is in a DDoS attack or not:NETSTAT-ANP |grep ' tcp\|udp ' |awk ' {print $} ' |Cut-d:-f1 |Sort |uniq-c | Sort–nThis command displays a list of the maximum num

How to check whether the Linux server is under DDOS attack or linuxddos Address: http://www.phpthinking.com/archives/427 Log on to your server and run the following command as the root user to check whether your server is under DD

command. It may seem quite normal for you. The figure below shows an example of the ps command output. The real problem is, "Are you sure you are normal ?" A common trick for hackers is to replace the ps command, and the ps command will not show the illegal running on your machine. To test the

history files to/dev/null so that you cannot see the commands they have input. You can access your history file by typing history at the shell prompt. If you find that you are using the history command and it does not appear in the list of commands you have used before, you should take a look at your ~ /. Bash_history file. If the file is empty, execute an ls-l ~ /. Bash_history command. After you execute

原文地址：http://www.phpthinking.com/archives/427 Log on to your server and execute the following command with the root user , using it you can check whether your server is in DDoS attack or not: netstat-anp |grep ' tcp\|udp ' | awk ' {print $} ' | Cut-d:-f1 | Sort | uniq-c | Sort–n This