Skip to main content

AIX and SOLARIS maintenance commands

AIX and SOLARIS


uname unix name, check which unix is used

uname // OS name
uname -r // OS version
uname -a // OS name, host, version

df info about disk space

df -v // percent of used blocks
df -vk // 1024-byte blocks
df -vm // MB blocks
df -gm // GB blocks

AIX

topas statistics about the activity on the local system

// all statistics
topas
// -w WLM - WorkLoad Management
topas -w

SOLARIS

prstat identify which processes are consuming the CPU

// -s cpu flag sorts by CPU usage (default), -n 5 flag restricts top five processes
prstat -s cpu -n 5
// -a summary of a consumption of resources by an user
prstat -s cpu -a
prstat -s cpu -a -n 5

ps process status

ps -eo pid,pmem,vsz,rss,comm | sort -rnk2 | head

Comments

Popular posts from this blog

ShutDownHook - the last breath of an application

ShutDownHook allows you to perform operations (e.g. close opened resources, remove temporary files and so on) just before virtual machine shuts down. A documentation says that JVM may shut down in two cases: program finishes execution normally when all threads finishes their work (except deamon-threads like garbage collector) virtual machine receives a termination signal (for example after sending kill signal under unix or ctrl + C key combination under windows) Below is an example which will start endless loop which do nothing. But an important thing in this code is a part where shutDownHook is added. When an termination signal will be send to JVM a code from a run() method will be executed just before JVM shuts down. public class ShutDownHook { public static void main(String[] args) { Runtime.getRuntime().addShutdownHook(new Thread() { public void run() { System.out.println("Close opened resources"); } }); while (true) { // do nothing } } }

scala Hello World

The code below prints Hello World! Hello.scala file (a name of file doesn't matter) object HelloWorld { def main(args: Array[String]) { println("Hello World!") } } Key word object is used to create a singleton object. To run this script use scala interpretor (check scala command line tools ).