Here are a few examples of using the “ ps -ef | grep processname” command with different options and arguments to filter and display the output: Example 1: Find the ID of a Specific ProcessĪn example is considered to find out the process id of the specific process in the terminal. How Does “ps -ef | grep processname” Command Work in Linux? The second part filters the output to show only the processes that match the given process name or pattern. Below is a pretty dirty and quick script to loop through each process that is open and grab the Size, Rss, Pss and Shared Clean/Dirty usage. If you have a newer kernel it should support /proc/pid/smaps which gives you some detailed information on each processes memory usage. If you start a process with /path/to/the/file, and you go in /path/to, the ps -aef grep (pwd) will do a ps -aef grep /path/to and should show that process as its full path is /path/to/the/file. In the “ ps -ef | grep processname” command, the first part of the command lists all the processes on the system. 8 Obtaining memory usage through ps is pretty unreliable. On operating systems that support the SUS and POSIX standards, ps commonly runs with the options -ef, where -e selects every process. it is probably used to find out processes whose binaries/scripts are located in (or underneath) the current directory. If you would like to send a signal to every instance of a certain process, you can use the killall command: killall firefox. The above command is the equivalent of: kill -9 pgrep ping. It also causes the command arguments to be. The pkill command works in almost exactly the same way as kill, but it operates on a process name instead: pkill -9 ping.
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