![]() ![]() Flexibility can be added with some cmd-line args to make this more versatile but I wanted to share what worked for me. I know there are lots of "MAGIC" numbers and cheezy hard-coded values but it works, (I think I'm also in poor taste for using so much UPPERCASE too). This is very perl-like to me and possibly more unix utils than true shell scripting. Ssh -L 5904:localhost:5904 -f -l USER2 HOST2 sleep 10 Ssh -L 5901:localhost:5901 -f -l USER1 HOST1 sleep 10 In particular, ps eww , where option -e selects all processes, while option -ww stands for wide output with unlimited width (sometimes the list of variables is very long).![]() I have noticed an additional information with this option, it shows an exact minutes of the process start.I need to do this from time to time and end up hacking the command line until it works.įor example, here I want to see if I have any SSH connections, (the 8th column returned by "ps" is the running "path-to-procname" and is filtered by "awk": ps | awk -e '' | grep vnc | sed -e 's/.*///g' | wc -l` Another way to check the environment variables of a Linux process is to use the ps command. Method-5: Using lstart option from the ps Commandįacebook user âBunty Gr8â has suggested the below option to get the exact start date and time of the process, itâs awesome. system memory, devices mounted, hardware configuration, etc). to find out the information that you are looking for. It is then possible to add a few more awk, cut, grep etc. It doesnât contain ârealâ files but run time system information (e.g. lsof -p PROCESSID This will list all the files opened by the process including the executable's actual location. Itâs sometimes referred to as a process information pseudo-file system. ![]() The proc filesystem (procfs) is a special filesystem in Unix-like operating systems that presents information about processes and other system information. As per the below output the httpd process has been running since Aug 05 at 17:20. However, the above command doesnât show you the exact start time of the process and use the following format to check that. As per the below output the httpd process has been running since Aug 05. The above commands doesnât show you the exact start date of the process and if you want to know those information then you can use the following command. If you would like to know for how many days the process has been running then use the following format. In Linux every process on a system has a PID ( Process Identification Number) which can be used to kill the process. Use the ps command with etime option to get detailed elapsed time. ![]() To do so, you need to find the PID of a process, we can easily identify it by using pidof command. etimes: elapsed time since the process was started, in seconds.The common options for 'give me everything' are ps -ely or ps aux, the latter is the BSD-style. etime: elapsed time since the process was started, in the form of hh:]mm:ss. Thus, ps -e will display all of the processes.It provides a snapshot of the current processes along with detailed information like username, user id, cpu usage, memory usage, process start date and time command name etc. Ps stands for processes status, it display the information about the active/running processes on the system. So, donât get confused between top and ps commands. No, It shows you the total CPU time the task has used since it started. Make a note: You may think the same details can be found on top command output. There are multiple options are available in ps command to check this.Ä®ach options comes with different output, which can be used for different purpose. List Running Processes in Linux by Using the ps Command The ps Linux command creates a snapshot of currently running processes. You can also combine the ps command with the pgrep command to identify individual processes. It shows, the given process uptime in the form of hh:]mm:ss, in seconds, and exact start date and time. To list currently running processes, use the ps, top, htop, and atop Linux commands. We can easily check with the help of âpsâ command. Weâve used the -l option to list the name of the process. If you want to figure out how long a process has been running in Linux for some reason. Here, we can see it listed the running PID and its name. ![]()
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