Using top you can monitor processes and the resources they use. Top has many formatting options to sort by different programs as well as edit. Top can also be used to nice or renice a command. In addition if you need to end a process top helps out again. By sending a process the appropriate signal you can tell a process to stop. If it refuses we can forcibly remove it.
- [Instructor] The ps command shows you…up to date process information,…but we have to keep running it to get real-time data.…Linux has another tool used just for…displaying real-time process information called TOP.…In a terminal, start TOP by typing in top and hitting enter.…Note that the display is being…updated every couple of seconds.…In the summary area at the top of the screen…TOP shows how long the system has been up,…the load average, how many processes are running,…how many are waiting for CPU time,…the overall CPU usage, and memory usage.…
We can modify this area with a few shortcuts.…Press L to show or hide the load average/uptime line.…Press number one if you want to show CPU usage…for all CPU cores if you have more than one.…Press T if you want to toggle between task and CPU states.…You can also turn this data off as well.…Pressing number one and T allows you…to have a solid bar for each CPU core.…
Press M to toggle between different memory displays…or turn off memory statistics.…In the fields area, it shows the same fields as ps.…
- Topics include:
- Shell tips and tricks
- Pattern matching with globs
- Pattern matching with extended globs
- Using the Bash shell
- Monitoring processes using ps
- Monitoring processes graphically
- Managing processes
- Job scheduling
- Limiting access to AT and cron jobs
- Managing system services
Skill Level Intermediate
Linux: User and Group Managementwith Grant McWilliams1h 8m Intermediate
1. Linux Shells Overview
2. Using the Bash Shell
3. Linux Processes
4. Job Scheduling
5. System Services
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