Very small prob, But I m stuck !!! Post: 302470594

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Operating Systems Linux Ubuntu Very small prob, But I m stuck !!! Post 302470594 by the.reverser on Wednesday 10th of November 2010 12:31:16 PM

11-10-2010

Registered User

Very small prob, But I m stuck !!!

Hi All,
I m trying to write a small utilities to help me.
I need to create a shell script to which if I give two filenames it will create a some.diff file from that.

I know its very simple, but I am stuck
here is code I have written.

Code:

  1 #this is is diff file generator
  2 
  3 echo $1 $2  
  4 #echo $#
  5 echo script $0 is running in `pwd` directory diff file will be generated in     current directory.
  6 
  7 echo first file enter as $1
  8 echo second file entered as $2
  9 #echo $filename
 10 DIFF_FILENAME=`echo $filename | awk -F"."'{print $1}'`
 11 echo $DIFF_FILENAME
 12 #read DIFF_FILE_NAME 
 13 #diff $1 $2 >

in the line number 10, I am just trying to get diff file name from first file name.
let say have filename1.c, I want the name of diff file as filename1.diff
some how I am not able to cut the name before dot (.) and append the .diff to it.
Anyone please help me out, where I m making mistake.
Thanks in advnace.

~reverser

Last edited by Scott; 11-10-2010 at 03:30 PM.. Reason: Code tags

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LEARN ABOUT MINIX

bdiff

bdiff(1)							   User Commands							  bdiff(1)

NAME

       bdiff - big diff

SYNOPSIS

       bdiff filename1 filename2 [n] [-s]

DESCRIPTION

       bdiff  is  used in a manner analogous to diff to find which lines in filename1 and filename2 must be changed to bring the files into agree-
       ment. Its purpose is to allow processing of files too large for diff. If filename1 (filename2) is -, the standard input is read.

       bdiff ignores lines common to the beginning of both files, splits the remainder of each file into n-line segments, and invokes diff on cor-
       responding segments. If both optional arguments are specified, they must appear in the order indicated above.

       The  output  of	bdiff  is exactly that of diff, with line numbers adjusted to account for the segmenting of the files (that is, to make it
       look as if the files had been processed whole). Note:  Because of the segmenting of the files, bdiff does not necessarily find  a  smallest
       sufficient set of file differences.

OPTIONS

       n	The  number  of line segments. The value of n is 3500 by default. If the optional third argument is given and it is numeric, it is
		used as the value for n. This is useful in those cases in which 3500-line segments are too large for diff, causing it to fail.

       -s	Specifies that no diagnostics are to be printed by bdiff (silent option). Note:  However, this does not suppress possible diagnos-
		tic messages from diff, which bdiff calls.

USAGE

       See largefile(5) for the description of the behavior of bdiff when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).

FILES

       /tmp/bd?????

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       diff(1), attributes(5), largefile(5)

DIAGNOSTICS

       Use help for explanations.

SunOS 5.10							    14 Sep 1992 							  bdiff(1)

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