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top -u khalid -n 1 -stats pid,command
...this command is used to get the currently running processes in system by extracting two columns pid and command---but this is used in macontosh....in linux we dont have any stats command----so plz help me to get stats equivalent command in linux..
Actually this is a java code which is using it....
i need top to get the process list ...but i need only 2 columns pid and command.
Process process = Runtime.getRuntime().exec("top -u khalid -n 1 -stats pid,command")
I feel certain that ps gets its information from the /proc filesystem, and that it makes the most sense for you to do so as well. Under /proc, any directory which has a name composed solely of decimal numerals is an entry for an existing process, and the respective PID is given by the directory name. Within the directory for each process is a pseudo-file, 'cmdline'. Reading that file will give you the commandline that was used to launch the process. Iterating over the /proc directory and getting all of the respective cmdline files gets you the information in the most direct form. Can be done in any programming language that can read from files and directories.