What is the difference between top and ps command in Linux?

top is mostly used interactively (try reading man page or pressing “h” while top is running) and ps is designed for non-interactive use (scripts, extracting some information with shell pipelines etc.) top allows you display of process statistics continuously until stopped vs. ps which gives you a single snapshot.

What does top command do in Linux?

top command is used to show the Linux processes. It provides a dynamic real-time view of the running system. Usually, this command shows the summary information of the system and the list of processes or threads which are currently managed by the Linux Kernel.

What does top Stand for Linux?

Process viewer / System monitor. top (table of processes) is a task manager program, found in many Unix-like operating systems, that displays information about CPU and memory utilization.

How do I find the top 10 processes in Linux?

How To Check Top 10 CPU Consuming Process In Linux Ubuntu

  1. -A Select all processes. Identical to -e.
  2. -e Select all processes. …
  3. -o User-defined format. …
  4. –pid pidlist process ID. …
  5. –ppid pidlist parent process ID. …
  6. –sort Specify sorting order.
  7. cmd simple name of executable.
  8. %cpu CPU utilization of the process in “##.

What does netstat command do in Linux?

The network statistics ( netstat ) command is a networking tool used for troubleshooting and configuration, that can also serve as a monitoring tool for connections over the network. Both incoming and outgoing connections, routing tables, port listening, and usage statistics are common uses for this command.

What is ps example?

P.S. is short for postscript, which is defined as an addition to a letter. An example of P.S. is what a person writes after his signature in the letter if he forgot to include something in the body.

How do you read Htop results?

Understanding CPU Usage in htop

  1. Blue: Display percentage of CPU used by low priority processes. ( …
  2. Green: Displays percentage of CPU used for processes owned by normal users.
  3. Red: Displays percentage of CPU used by system processes.
  4. Orange: Displays percentage of CPU used by IRQ time.

How do I see all threads in Linux?

Using the top command

To enable thread views in the top output, invoke top with “-H” option. This will list all Linux threads. You can also toggle on or off thread view mode while top is running, by pressing ‘H’ key. Note how in the example above the number of threads on the system is listed.

What is the nice value in Linux?

In Linux system priorities are 0 to 139 in which 0 to 99 for real-time and 100 to 139 for users. Nice value — Nice values are user-space values that we can use to control the priority of a process. The nice value range is -20 to +19 where -20 is highest, 0 default and +19 is lowest.

What is S in top command?

‘S’ and ‘D’ are two sleep states, where the process is waiting for something to happen. The difference is that ‘S’ can be interrupted by a signal, while ‘D’ cannot (it is usually seen when the process is waiting for the disk). ‘T’ is a state where the process is stopped, usually via SIGSTOP or SIGTSTP .

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