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Tuesday, 16 March 2010 13:38 |
Command uptime
Displays the time of continuous operation of the system.
Syntax
uptime
Options
no
Description
uptime utility displays the current time, time of continuous operation of the system, the number of users in the system and the average system load over the last 1, 5, and 15 minutes.
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Tuesday, 16 March 2010 12:53 |
Command top
Displays a list of currently executing processes, ordered by the percentage use of CPU time.
Syntax
top [q] [d interval]
Options
q requires top performance with the highest possible priority (for this you should be a privileged user).
d interval specifies the interval in seconds between updates of information.
Description
top command generates full-screen record of running processes with their share use of CPU time. By default, top updates every 5 seconds. For the termination of top press <q> or <ctrl-s>.
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Friday, 19 February 2010 12:44 |
Command pstree
Displays all running processes in a tree.
Syntax
pstree [options] [process_id]
Options
-a displays the command line arguments.
-c does not compress the subtrees.
-l displays a long line.
-n sorts the processes by their identifiers (and not by name).
-p displays the process IDs.
Description
Pstree command displays all the processes in the form of a tree - so it's easier to see the relationship precedence processes.
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Friday, 19 February 2010 12:37 |
Command ps
Displays the status of processes (programs) running in the system.
Syntax
ps [options]
Options
Note that unlike other commands ps command options do not have a prefix "-".
a display processes of other users.
f displays a tree of processes.
j displays the output using the format jobs.
l displays the data in long format, with detailed information about each process. m displays information about memory usage of each process.
u displays the user name and start time.
x displays processes that are not associated with any terminal.
Description
The ps command displays the status of processes running on the system. The ps command without parameters to generate a list of processes you run. To view a list of all processes running on the system, type ps ax (or ps aux, if you want more information for each process).
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Wednesday, 16 December 2009 17:17 |
Command killall
killall command kills all active processes.
Syntax
killall [options]
Options
view option kill command
Description
Command killall kills all active processes. Implied value send a signal equal to 9 (signal destruction).
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