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Full Discussion: Q: Howto compare 2 files
Top Forums UNIX for Dummies Questions & Answers Q: Howto compare 2 files Post 302696083 by Don Cragun on Tuesday 4th of September 2012 09:03:43 AM
Old 09-04-2012
Save the following in a file named diffs.awk:
Code:
#!/bin/ksh
if [ $# -ne 2 ]
then
        printf "Usage: %s f1 f2\n    Two file operands are required.\n" "$(basename "$0")"
        exit 1
fi
awk 'FNR==1{
        if(NR==1) f1 = FILENAME
        else    f2 = FILENAME
}
f2=="" {# Make an entry for this record from the 1st file in array c1:
        c1[$0]
        next
}
 {      # We are now in the 2nd file.  Look for matching entry from 1st file.
        if($0 in c1) {
                # Matching entry found.  Delete the entry from the list of
                # unmatched entries from the 1st file.
                delete c1[$0]
                next
        }
        # No match found...
        if(c2only++ == 0) printf("The following entries are only in %s:\n", f2)
        print
}
END {   # Any entries remaining in c1 are present only in the 1st file.
        for(i in c1) {
                if(c1only++ == 0)
                        printf("The following entries are only in %s:\n", f1)
                print i
        }
        printf("%d unmatched entries found in %s\n", c1only, f1)
        printf("%d unmatched entries found in %s\n", c2only, f2)
}' "$@"

and make it executable:
Code:
chmod +x diffs.awk

then, for your example, invoke it with:
Code:
diffs.awk File1 File2

With File1 and File2 as shown in the first message in this thread, the output produced is:
Code:
The following entries are only in File1:
456123456
1 unmatched entries found in File1
0 unmatched entries found in File2

 

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LEARN ABOUT OSF1

dxmsvngetdisplayed

DXmSvnGetDisplayed(3X)													    DXmSvnGetDisplayed(3X)

NAME

       DXmSvnGetDisplayed - Retrieves (returns) displayed entry numbers and related information necessary to draw a corresponding display.

SYNOPSIS

       void DXmSvnGetDisplayed(
	       Widget widget,
	       int *entries(),
	       XtPointer *tags(),
	       int *ys(),
	       int len );

PARAMETERS

       The  identifier	(widget  ID)  of the SVN widget.  A pointer to an array of integers to receive the entry numbers of the entries being dis-
       played.	A pointer to an array of longwords to receive the application's entry_tag value  for  each  entry  displayed.	If  tags  are  not
       required,  a  Null  pointer may be passed.  A pointer to an array of longwords to receive the y coordinates for each entry displayed.  If y
       coordinates are not required, a Null pointer can be passed.  The number of entries allocated in the provided array.

DESCRIPTION

       The DXmSvnGetDisplayed routine returns information about the entries that the SVN widget is currently  displaying.   This  information  can
       then  be  used  to keep a simultaneous display up to date with the SVN widget window (in the case of a dialog box, for example, which might
       contain totals for the entries being displayed).

       The application is responsible for managing the memory used to return this list of entries.  As such, note the following: At  the  minimum,
       the  number  of	entries  in the array should be capable of holding at least the number of entries indicated by the value returned from the
       DXmSvnGetNumDisplayed routine.  If there are more entries in the array than the application will need, the SVN widget will  set	the  value
       for those extra entries to 0.  If the capacity of the arrays passed is less than the number of selected entries, only the number of entries
       allocated in the provided array (the value for len) will be returned.

															    DXmSvnGetDisplayed(3X)
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