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Top Forums Shell Programming and Scripting Get output of fields starting from 2nd line Post 302770848 by a1_win on Monday 18th of February 2013 03:10:21 PM
Old 02-18-2013
Get output of fields starting from 2nd line

Hi All,

I am using the following command in Linux:

Code:
 
sar -r 30 3
Linux 2.6.18-194.3.1.7.3.el5xen  02/07/2013

02:55:47 PM kbmemfree kbmemused  %memused kbbuffers  kbcached kbswpfree kbswpused  %swpused  kbswpcad
02:56:17 PM 128646024  22348920     14.80    230232  15575860  75497464         0      0.00         0
02:56:47 PM 128646188  22348756     14.80    230244  15576116  75497464         0      0.00         0
02:57:17 PM 128646676  22348268     14.80    230248  15576160  75497464         0      0.00         0
Average:    128646296  22348648     14.80    230241  15576045  75497464         0      0.00         0
-bash-3.2$


I have tried using the following command to get the desired output but somehow not getting it. %memused field is blank

Code:
 
-bash-3.2$ sar -r 1 3 | grep -v Average | grep -v Linux | cut -d' ' -f1,2,6

12:57:57 PM %memused
12:57:58 PM
12:57:59 PM
12:58:00 PM
-bash-3.2$

From the above output, I need to get the following output onwards.

Output should look as below( Need only the values and not the columns to be displayed):

Code:
 
02:55:47 PM    %memused 
02:56:17 PM      14.80    
02:56:47 PM      14.80    
02:57:17 PM      14.80

Thanks for your time!

Regards,
a1_win

Moderator's Comments:
Mod Comment edit by bakunin: corrected your CODE-tags: the opening one is always without the slash, only the closing one has it: [tag]...[/tag]

Last edited by bakunin; 02-18-2013 at 05:22 PM..
 

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LIBBASH(7)							  libbash Manual							LIBBASH(7)

NAME
libbash -- A bash shared libraries package. DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may want to load and use in scripts of your own. It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries. Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded using ldbash(1) must answer 4 requirments: 1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash). 2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library exports. I.e. all the function that will be usable after loading that library will be listed in that line. 3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are required for our library. I.e. every bash library that is in use in our bash library must be listed there. 4. The library must be listed (For more information, see ldbashconfig(8)). Basic guidelines for writing library of your own: 1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions. 2. Try to declare all variables intended for internal use as local. 3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with: __<library_name>_ For example, internal function myfoosort of hashstash library should be named as __hashstash_myfoosort This helps to avoid conflicts in global name space when using libraries that come from different vendors. 4. See html manual for full version of this guide. AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <ril@ran4.net> SEE ALSO
ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1) Linux Epoch Linux
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