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1
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1answer
12 views

Get summary count of all patches applied to a server?

Is there an easy way to get a count of the total number of patches applied to a server over a time frame, or even in summary?
2
votes
1answer
44 views

How to gather byte occurance statistics in binary file?

I'd like to know the equivalent of cat inputfile | sed 's/\(.\)/\1\n/g' | sort | uniq -c presented in ...
2
votes
1answer
49 views

Mathematical processing on text file

I have 200 text files. Each text file contains one column of mathematical numbers (100k rows). I want to do some statistical processing on these data (finding the probit or quantile). I know the ...
0
votes
2answers
36 views

How to list similar lines?

The delimiters could be: " "; "_" INPUT: foo#foo_ehh113#The password of user 111 will expire within the next seven d foo#foo_ehh204#The password of user 111 will expire within the next seven d ...
5
votes
2answers
71 views

How can I see i/o stats for a briefly running process?

For long running processes like init, I can do things like $ cat /proc/[pid]/io What can I do if I want to see stats for a briefly running process such as a command line utility like ls? I don't ...
2
votes
1answer
41 views

How do you implement totals from usage output generated by a program in a script so that they carry on sanely through repeated execution?

I have a script with a pipeline where the data is throttled by a program. Every 20 minutes, a throughput status is sent on stderr, and I simply redirect this to a file: command | cstream -t -512k -T ...
1
vote
1answer
81 views

is there an equivalent to systat in Linux?

Is there an equivalent to the amazing systat command in Linux-based operating systems? For those who don't know about it, the BSD's systat command is just amazing. It displays live graphs of network ...
3
votes
2answers
489 views

How do I install plugins for collectd

I have installed collectd and got it running but also wanted to use the Ping plugin ( https://collectd.org/wiki/index.php/Plugin:Ping ) but it's not actually installed by default (i.e. not in the list ...
15
votes
2answers
521 views

Is there something like `time` that also records I/O and CPU?

I can pretty quickly monitor the running time of a process with time: x@y ~ $ time foo real 0m14.299s user 0m4.770s sys 0m0.440s Is there a way I can get the same data for ...
-1
votes
1answer
100 views

Which is the most precise command to get processes and system information? [closed]

I'm trying to evaluate performances of some active processes of mine on linux. Searching the internet I found that ps and top are the only command available for that. More precisely here, it says ...
1
vote
0answers
42 views

Should rpc.statd write anything into wtmp?

On several linux machines (some old custom variant of gentoo) I have huge wtmp files, up to gigabyte in size. After some experiments I know that there is rpc.statd daemon running on all servers and ...
0
votes
1answer
1k views

Load average per process or user

is it possible to obtain load average values (as displayed by uptime) individually per process or user. I would like to be able to see what user is causing what load. top is not really suitable ...
4
votes
1answer
263 views

Are there awk versions that provide syntax for computing aggregations?

From time to time I find myself writing awk scripts that compute some simple statistics. For example computing a histogram, the average of a value, the standard deviation or even the variance ... ...
1
vote
0answers
251 views

Is collectd able to send data tagged as a host other than itself?

I log various stats both generic and custom from a lot of different servers using collectd to a single host running a network listener. The setup is pretty simple. All the systems run an instance of ...
7
votes
4answers
5k views

Traffic stats per network port

I have two machines with two applications that talk to each other on few network ports (TCP and UDP). I want to count traffic that they send and receive. I need not only overall count but stats per ...
9
votes
4answers
563 views

Where can I find the historical source code of the Linux sources

I want to do research on the evolution of Linux. Therefore it would be nice if I could download the sources of Linux at several moments in time (from 1991 till now). Is there a site where one can ...
3
votes
2answers
935 views

I/O statistics per user

I have access to an academic supercomputer where there is an NFS filesystem where our lab keeps our data. When I run iostats -nh I believe I am getting statistics for all users accessing all storage ...
6
votes
1answer
141 views

counting the number of occurences in a file of data list

I have a data file, like 7 2 10 9 10 3 2 4 2 4 6 Each line has a single value. I want to count the occurence of each value. For instance, 10 occurs two times in this file. Is there a simple way ...
1
vote
1answer
608 views

iostat usage and output

When I run the iostat command like this: iostat -d I get a result something like this: Linux 2.6.18-238.el5 (mon01) 09/03/2011 Device: tps Blk_read/s Blk_wrtn/s Blk_read ...
2
votes
1answer
860 views

Tool to monitor in and out data network traffic w graphs and detailed stats

Is there a tool, that can gather stats on network usage? Requirements: Generate HTML (or other format, convertible to HTML) Time line graphs for bandwidth usage, also which hosts use the most ...
8
votes
1answer
30k views

How do I get sar to show for the previous day?

on our servers, typing sar show's the system load statistics for today starting at midnight, is it possible to show yesterdays statistics?