Linux top command
Linux top command to display real-time dynamic process of.
Access: All users.
grammar
top [-] [d delay] [q] [c] [S] [s] [i] [n] [b]
Parameter Description:
- d: to change the display update rate, or the conversational command line (interactive command) by s
- q: There is no display speed delay, if the user is superuser privileges, the top priority will be the implementation of the highest order
- c: switch the display mode, there are two modes, one show only the name of the executable file, the other is display the full path and name S: accumulation mode, it will have been completed or lost child process (dead child process) of CPU time accumulated
- s: safe mode, conversational instruction canceled, to avoid potential crises
- i: do not show any idle (idle) or useless (zombie) trip
- n: number of updates, will quit after completion top
- b: batch file mode, with the "n" parameter used together, the results can be used to output to a file within the top
Examples
Display process information
# top
Show full command
# top -c
In batch mode display program information
# top -b
In the cumulative mode display program information
# top -S
Setting information update frequency
top -n 2 //表示更新两次后终止更新显示
Setting information update
# top -d 3 //表示更新周期为3秒
Displays the specified process information
# top -p 139 //显示进程号为139的进程信息，CPU、内存占用率等
Displays exit after ten update
top -n 10
Users will not be able to use conversational commands for the next trip command
top -s
We will update the display results of the second input to the name of top.log archives
top -n 2 -b < top.log