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Full Discussion: grabbing more than one argument in a loop
Top Forums Shell Programming and Scripting grabbing more than one argument in a loop Post 302289487 by Intense4200 on Thursday 19th of February 2009 06:49:15 PM
Old 02-19-2009
grabbing more than one argument in a loop
Hello all I hope someone can help me. I am trying to convert something I wrote in C to bash.

But how do I go about reading more than one item at a time in a for loop?
i have been using this format for the loops in the bash script i have been building.

e.g.
Code:
for word in `cat -s sortlist2.txt`
do
    echo -e "$word\n";
done

but now i need more than one variable per pass of the loop.

here is the format of the sortlist2.txt. it is the path/name and time-stamp space separated one entry per line:
  • p2_6f_9_19_3/Eci 1063673162
    p2_6f_9_19_3/Zargon 1063679315
    p2_6f_9_19_3/Weslyn 1063681624
    p2_6j_10_8_4/Weslyn 1063681624
    p2_6k_12_11_4/Weslyn 1063681624
    p2_6l_2_16_5/Weslyn 1063681624
    p2_6f_9_19_3/Eilonwy 1063686817
    p2_6f_9_19_3/Aloof 1063686900
    p2_6f_9_19_3/Papertiger 1063688780
    p2_6f_9_19_3/Bytor 1063689879
    p2_6f_9_19_3/Ziggs 1063709714
    p2_6f_9_19_3/Tyrael_rcls 1063711697
    p2_6f_9_19_3/Cypress 1063716672
    p2_6f_9_19_3/Neuromancer 1063717200
    p2_6f_9_19_3/Endram 1063730040
    p2_6j_10_8_4/Endram 1063730040
    p2_6k_12_11_4/Endram 1063730040
    p2_6l_2_16_5/Endram 1063730040
    p2_6f_9_19_3/Bixx 1063736835
    $
The C code reads in the data and keeps the first unique entry (saved to sortlist3.txt) and puts the repeat time-stamp entries in a file (rmlist.txt) for removing those player files later.

here is the C code:
Code:
      if ((fpr = fopen("../../../parchive/rmlist.txt", "w")) == NULL)
      {
            perror("couldn't open rmlist.txt for writing.");
            return;
      }

       if ((fp = fopen("../../../parchive/sortlist2.txt", "r")) != NULL)
       {
            name = fread_word(fp);
            logo = fread_number(fp);

            if ((fpo = fopen("../../../parchive/sortlist3.txt", "w")) != NULL)
            {
                fprintf(fpo, "%s %ld\n", name, logo);                    

                for (;;)
                {
                    prev_name = name;
                    prev_logo = logo;

                    name = fread_word(fp);

                    if (name[0] == '$')
                    {
                        fprintf(fpo, "$\n");
                        break;
                    }

                    logo = fread_number(fp);

                    if (logo == prev_logo)
                    {
                        fprintf(fpr, "%s\n", name);                    
                        continue;
                    }

                    fprintf(fpo, "%s %ld\n", name, logo);                    
                }
            }
            else
            {
                perror("couldn't open sortlist3.txt for writing.");
            }
            
            fclose(fp);
            fclose(fpo);
            fclose(fpr);
        }

or is there some slick bash command(s) that can do this sorting?
I can get rid of the $ at the end of the file if needed. I just needed it for C to detect the end of the list. I thought about reading the file into two arrays, $name[] and $logo[] and then do the filtering. Possibly use the read command and a while statement? Thanks.
 

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LEARN ABOUT SUSE

xlogo

XLOGO(1)						      General Commands Manual							  XLOGO(1)

NAME

       xlogo - X Window System logo

SYNOPSIS

       xlogo [-toolkitoption ...]

DESCRIPTION

       The xlogo program displays the X Window System logo.

OPTIONS

       Xlogo accepts all of the standard X Toolkit command line options, as well as the following:

       -render This option indicates that the logo should be drawn with anti-aliased edges using the RENDER extension.

       -sharp  If -render is also specified, this forces the edges to be rendered in sharp mode, (ie. 1-bit alpha channel).

       -shape  This option indicates that the logo window should be shaped rather than rectangular.

RESOURCES

       The  default width and the default height are each 100 pixels.  This program uses the Logo widget in the Athena widget set.  It understands
       all of the Simple widget resource names and classes as well as:

       foreground (class Foreground)
	       Specifies the color for the logo.  The default is depends on whether reverseVideo is specified.	If reverseVideo is  specified  the
	       default is XtDefaultForeground, otherwise the default is XtDefaultBackground.

       shapeWindow (class ShapeWindow)
	       Specifies that the window is shaped to the X logo.  The default is False.

WIDGETS

       In  order  to specify resources, it is useful to know the hierarchy of the widgets which compose xlogo.	In the notation below, indentation
       indicates hierarchical structure.  The widget class name is given first, followed by the widget instance name.

       XLogo  xlogo
	    Logo  xlogo

ENVIRONMENT

       DISPLAY to get the default host and display number.

       XENVIRONMENT
	       to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.

FILES

       /usr/share/X11/app-defaults/XLogo
	      specifies required resources

SEE ALSO

       X(7), xrdb(1)

AUTHORS

       Ollie Jones of Apollo Computer and Jim Fulton of the MIT X Consortium wrote the logo graphics routine, based on a graphic design  by  Danny
       Chong and Ross Chapman of Apollo Computer.

X Version 11							    xlogo 1.0.1 							  XLOGO(1)
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