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Full Discussion: Changing Line in Txt File
Top Forums Shell Programming and Scripting Changing Line in Txt File Post 302679281 by Jimmyd24 on Tuesday 31st of July 2012 11:13:52 AM
Old 07-31-2012
Changing Line in Txt File
So I have a python program that I run, which runs accordingly to options I have listed in a text file (ie user_prefs). Now there are many options listed in this user_prefs.txt, but the one of most interest to me is that of the file path of the time series.

I have over a hundred of these time series that I would like to run this python program through (which I would rather not do randomly).....My question is how could I possibly write a script a shell script to go through and just change the time series file name and then in a loop I would be running the other python program.

All the time series files have a common suffix, but just a numbered prefix, but the number are not of any pattern, rather random. (ie 843523ascii_vF.txt)

I though of trying to write a fortran program to go in and just replace that line but cant think of the way to write the prefix from the file name to inside the program.


Any help would be greatly appreciated, thanks!

---------- Post updated 07-31-12 at 11:13 AM ---------- Previous update was 07-30-12 at 03:00 PM ----------

I was thinking about possibly constructing a shell script using

Code:
sed -i "" 's/phrase/newphrase/'g' user_prefs.txt

in order to replace the file name, however, i would want the newphrase to be the filename. I know when using a fortran I could do something like

Code:
for File in *.txt (where File new phrase I would like to insert into the txt file)
do
         ./blah.o < "$File" > 
done

so would I be able to similarly do something like this for my problem.

Code:
for File in *.txt 
do
            sed -i "" 's/phrase/"$File"/'g' user_prefs.txt
done

Thanks for the help
Last edited by Scrutinizer; 07-31-2012 at 12:23 PM.. Reason: code tags
 

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LEARN ABOUT DEBIAN

urls_txt

URLS.TXT(5)							File Formats Manual						       URLS.TXT(5)

NAME

       urls.txt - URL database for regression testing

INTRODUCTION

       The urls.txt file is installed by default in /etc/siege/urls.txt.  When siege is invoked without a command line reference to a URL, then by
       default it looks for urls in that file.	The advantage of using the urls.txt file is two-fold: One, it frees you free retyping a  url  with
       every invocation.  And two, it allows you to conduct full site regression testing.

       When  the  urls.txt  file  is used, siege reads all the urls in that file into memory and runs through the list in one of two ways, sequen-
       tially or randomly. The default run is sequential from start to finish and back again until the --reps or the --time option has been satis-
       fied.   With the -i/--internet option selected, siege runs through the file randomly simulating the stress applied by a community of inter-
       net users.

       The -f/--file option allows you to select a file other then the default urls.txt file. You may also instruct siege to use a different  file
       with the "file" directive in .siegerc, i.e., "file = /usr/local/etc/urls.txt"
	 You  may  set	and reference variables inside the urls.txt file. All variables must be declared BEFORE they are referenced. Variables are
       declared with the "=" operator, VARIABLE = VALUE. They are then referenced inside $() or ${}, example: $(HOST), ${HOST}
	HOST=joey.joedog.org
       http://${HOST}/browse.jsp?size=5
       http://${HOST}/admin.jsp?name=ralph

EXAMPLE FILE

       This is an exmple urls.txt file.  Lines beginning with a hash (#) are comments and ignored by siege.

       #
       # Example urls.txt file
       # URLs database for siege
       #
       http://www.haha.com/index.html
       http://www.haha.com/howto/index.html
       http://www.haha.com/cgi-bin/howto/display.cgi?1013
       www.haha.com/cgi-bin/fm.cgi?first=j.&last=fulmer
       https://www.haha.com/index.shtml
       https://www.whoohoo.com/my_whoohoo.jsp
       # POST data requires a POST directive
       www.haha.com/cgi-bin/foo.cgi POST first=bart&last=simpson
       www.haha.com/hoho.jsp POST name=jeff&pass=secret
       # POST the contents of a file using the
       # line input character "<"
       http://www.haha.com/my.jsp POST </home/jeff/data.txt

AUTHOR

       Jeffrey Fulmer <jeff@joedog.org>, et al.

BUGS

       Report bugs to jeff@joedog.org.	Give a detailed description of the problem and report the version of siege that you are using.

COPYRIGHT

       Copyright (C) 2007 Jeffrey Fulmer, et al.

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as  published	by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This  program  is  distributed  in  the	hope  that  it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free  Software  Foundation,
       Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

AVAILABILITY

       The most recent released version of siege is available by anonymous FTP from ftp.joedog.org in the directory pub/siege.

SEE ALSO

       siege(1) siege.config(1) layingsiege(7)

Siege v2.70							   April-17-2012						       URLS.TXT(5)
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