通过/proc 实时管理linux

jinl

                                /proc 文件系统是 Linux 的优秀特性之一，本文向您详细讲述了它的一些最实用的基础知识。使用/proc，您再也不用关闭并重新引导机器来管理操作系统的许多细节问题，这对那些要求系统的可用性尽可能高的管理员来说非常有用。
详细参见
http://www.ibm.com/developerworks/cn/linux/l-adfly/index.html
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Some Common Files in /proc
cpuinfo contains the information established by the kernel about the processor at boot time, e.g., the type of processor, including variant and features.
kcore contains the entire RAM contents as seen by the kernel.
loadavg contains the system load averages for the last 1, 5 and 15 minutes, along with the number of processes currently running and the total number of processes.
meminfo contains information about the memory usage, how much of the available RAM and swap space are in use and how the kernel is using them.
stat contains system statistics, counts of the amount of usage the kernel has made of basic system resources.
uptime contains the amount of time in seconds that the system has been running, and the amount of that time that it has been idle.
version contains the kernel version information that lists the version number, when it was compiled and who compiled it.
net/ is a directory containing network information.
net/dev contains a list of the network devices that are compiled into the kernel. For each device there are statistics on the number of packets that have been transmitted and received.
net/route contains the routing table that is used for routing packets on the network.
net/snmp contains statistics on the higher levels of the network protocol.
self/ contains information about the current process. The contents are the same as those in the per-process information described below.
pid/ contains information about process number pid. The kernel maintains a directory containing process information for each process.
pid/cmdline contains the command that was used to start the process (using null characters to separate arguments).
pid/cwd contains a link to the current working directory of the process.
pid/environ contains a list of the environment variables that the process has available.
pid/exe contains a link to the program that is running in the process.
pid/fd/ is a directory containing a link to each of the files that the process has open.
pid/mem contains the memory contents of the process.
pid/stat contains process status information.
pid/statm contains process memory usage information.
               
               
               
               
               
               

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