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Operating Systems Linux Gentoo cpu%/mem% usage, scripting, dzen2: howto learn bash the hard way Post 302220994 by broli on Saturday 2nd of August 2008 07:29:39 PM
Old 08-02-2008
cpu%/mem% usage, scripting, dzen2: howto learn bash the hard way

I am trying to write a small (and rather simple) script to gather some info about the system and piping it to dzen2

first, i want to explain some things.
I know i could have used conky, but my intention was to expand my knowledge of bash, pipes and redirections inside a script, and to have fun (which i am)
some time later, i also decided to try to be more strict on the resource usage. this is a script that will constantly run on a low-end laptop.

also, dzen is not the important part of the script and can be simple ignored, is just a way to show the info. if you are interested in dzen, you can read more info here gotmor - dzen

so, lets talk about the script itself

i use top in batch mode to get the list of most cpu/mem using, but now, i would like to include the total too. (in percentage)

with the memory, i was thinking maybe using free, and doing some math on the used/cached fields. but that would involve a new app to run, when top already gave me the info.
but taking the info from top's output will require a heavy use of pipes and secondary apps like tail and head

with the cpu%, well, im lost .....
where could i find that info?
im thinking, maybe is better to just use the iddle% field of top

this is what i have done so far
general pastebin - broli - post number 1091305

any suggestion on how to improve what i have done will also be welcomed
 

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SVNPATH(1)																SVNPATH(1)

NAME
svnpath - output svn url with support for tags and branches SYNOPSIS
svnpath svnpath tags svnpath branches svnpath trunk DESCRIPTION
svnpath is intended to be run in a Subversion working copy. In its simplest usage, svnpath with no parameters outputs the svn url for the repository associated with the working copy. If a parameter is given, svnpath attempts to instead output the url that would be used for the tags, branches, or trunk. This will only work if it's run in the top-level directory that is subject to tagging or branching. For example, if you want to tag what's checked into Subversion as version 1.0, you could use a command like this: svn cp $(svnpath) $(svnpath tags)/1.0 That's much easier than using svn info to look up the repository url and manually modifying it to derive the url to use for the tag, and typing in something like this: svn cp svn+ssh://my.server.example/svn/project/trunk svn+ssh://my.server.example/svn/project/tags/1.0 svnpath uses a simple heuristic to convert between the trunk, tags, and branches paths. It replaces the first occurrence of trunk, tags, or branches with the name of what you're looking for. This will work ok for most typical Subversion repository layouts. If you have an atypical layout and it does not work, you can add a ~/.svnpath file. This file is perl code, which can modify the path in $url. For example, the author uses this file: #!/usr/bin/perl # svnpath personal override file # For d-i I sometimes work from a full d-i tree branch. Remove that from # the path to get regular tags or branches directories. $url=~s!d-i/(rc|beta)[0-9]+/!!; $url=~s!d-i/sarge/!!; 1 LICENSE
GPL version 2 or later AUTHOR
Joey Hess <joey@kitenet.net> Debian Utilities 2013-12-23 SVNPATH(1)
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