Linux TOP Command

Top command options:

Line 1: Gives System present time, up time of the machine, number of users logged in, Load average on system at 1, 5, 15 min interval. Please ignore the values which mention load average as 5,10 and 15 mins.

Line 2: Gives total number of process on the machine, number of running process, number of sleeping process, number of stopped process, number of Zombie process.

Line 3: Gives you CPU details

Line 4 &  5: Gives RAM and SWAP details.

Line 6: To execute top command shortcuts(See below for the list of top command shortcuts ).

From Line 7: dynamically displayed top process results.

 top commands shortcuts:

Note: Press below shortcuts at the time of running top command.

l –To display or to hide load average line
t –To display or to hide task/cpu line
1 –To display or hide all other CPU’s
m –to display or to hide RAM and SWAP details
s –To change the time interval for updating top results(value is in sec’s)
R –To sort by PID number
u — Press u then username to get only that user process details
P –To sort by CPU utilization
M –To sort by RAM utilization
c –To display or hide command full path
r –To renice a process, press r then the PID no then the renice value to renice a process.
k –To kill a process, press k then PID number then enter to kill a process
w –To save the modified configuration permanently.
q –To quit the top command.
h –for getting help on top command

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