Tuesday, December 16, 2008
Redirect top command output to file - Linux
By default, top is invoked using interactive mode in which top runs indefinitely and accepts keypress to redefine how top works.
But, in case one need to post-process the top's output and this is hardly achieved using this interactive mode. For this we need to use top's batch mode.
from man pages of top:
-b : Batch mode operation
Starts top in 'Batch mode', which could be useful for sending output from top to other programs or to a file. In this mode, top will not accept input and
runs until the iterations limit you've set with the '-n' command-line option or until killed.
So this is how we can redirect top output to a file.
$ top -b -n 1 > top.out.$(date +%s)
Related post:
- Linux htop command - an interactive process viewer for Linux
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2 comments:
Hi I wan to know how many threads spawned for a java process (WebLogic Server instance). In prsat -L -p pid 1 1 gives it. I am looking similar kind of option in Linux. Can you reply ASAP.
@Pavan,
Not sure if this will help.
ps -eLf | grep "your_process"
where:
-L Show threads, possibly with LWP and NLWP columns
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