Is there a way to monitor the output of a linux command without having to type it over and over.
I want to do something like:
tail -f file.txt
But for a command like:
ps aux | grep httpd | wc
Thanks!
Linux – poll/monitor a linux command’s output
command-line-interfacelinux
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You can get a pretty good measure of this using the iostat tool.
% iostat -dx /dev/sda 5
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util
sda 0.78 11.03 1.19 2.82 72.98 111.07 45.80 0.13 32.78 1.60 0.64
The disk utilisation is listed in the last column. This is defined as
Percentage of CPU time during which I/O requests were issued to the device (band-width utilization for the device). Device saturation occurs when this value is close to 100%.
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