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Top Forums Shell Programming and Scripting Doing a loop to change a value in a file Post 302740619 by lost.identity on Thursday 6th of December 2012 12:10:40 PM
Old 12-06-2012
Doing a loop to change a value in a file

Hi, I have an N number of files in a directory. I like to write a shell script that would make identical plots for each one of these files.

The files have names such as:
Code:
t00001.dat
t00002.dat  
t00003.dat  
t00004.dat  
t00005.dat
       .
       .
       .
t00040.dat

i.e. the filename is incrementing numerically from a value of 1 to N.

I plot some variables from these files using gnuplot. So in my gnuplot plotting script (plot.gplt) I have the following line which plots the function:

Code:
plot 't00001.dat' using 1:2

I know that using a perl script I could change the filename 't00001.dat' incrementally. But with my limited knowledge in shell scripting I don't know how to do this.

Thanks!
 

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load_datafile(3alleg4)						  Allegro manual					    load_datafile(3alleg4)

NAME
load_datafile - Loads a datafile into memory. Allegro game programming library. SYNOPSIS
#include <allegro.h> DATAFILE *load_datafile(const char *filename); DESCRIPTION
Loads a datafile into memory in one go. If the datafile has been encrypted, you must first call packfile_password() to set the appropriate key. If the datafile contains truecolor graphics, you must set the video mode or call set_color_conversion() before loading it. Example: /* Load the resources for our game. */ DATAFILE *dat = load_datafile("game.dat"); if (!dat) abort_on_error("Couldn't load sound resources!"); /* Use resources. */ ... /* Destroy them when we don't need them any more. */ unload_datafile(dat); RETURN VALUE
Returns a pointer to the DATAFILE, or NULL on error. Remember to free this DATAFILE later to avoid memory leaks. SEE ALSO
load_datafile_callback(3alleg4), unload_datafile(3alleg4), load_datafile_object(3alleg4), set_color_conversion(3alleg4), fixup_datafile(3alleg4), packfile_password(3alleg4), find_datafile_object(3alleg4), register_datafile_object(3alleg4), excustom(3alleg4), exdata(3alleg4), exexedat(3alleg4), exgui(3alleg4), exsprite(3alleg4), exunicod(3alleg4) Allegro version 4.4.2 load_datafile(3alleg4)
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