03-11-2007
Dynamic Array Issue
Could one of you, please, provide some input regarding my problem below and it is as follows:
I have 2 files that I need to make sure are identical before processing:
First, I sort both files
Second, I do a diff file1 file2 > File 3
This provides me with the difference.
Now, I need to read File 3 - into an array and remove the difference from both files - if any
filename = /.../.../.../... #input file
set -A <array_name> [ < $filename]
Could I use the sed '/expression/' to remove the line???
Please advise.
Don
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
Is it possible to create a dynamic array in shell script. I am trying to get the list of logfiles that created that day and put it in a dynamic array. I am not sure about it. help me
New to scripting
Gundu (3 Replies)
Discussion started by: gundu
3 Replies
2. Programming
Hi all,
I'm getting segmentation fault errors when I try to send/receive 2 rows of a matrix as a block, and I can't figure out why.
Basically, I have a 4x5 matrix with an extra top row and an extra leftmost column, making it a (4+1)x(5+1) matrix stored in P0. I'm trying to send the 2nd and 3rd... (1 Reply)
Discussion started by: lancer6238
1 Replies
3. Shell Programming and Scripting
i want to create an array
the array elements are populated depending upon the number of entries present in a data file
The data file is created dynamically
how to achieve the same
thanks (1 Reply)
Discussion started by: trichyselva
1 Replies
4. Programming
I am facing a strange error while creating posix threads:
Given below are two snippets of code, the first one works whereas the second one gives a garbage value in the output.
Snippet 1
This works:
--------------
int *threadids;
threadids = (int *) malloc (num_threads * sizeof(int));
... (4 Replies)
Discussion started by: kmehta
4 Replies
5. Programming
Hi,
I have the following problem: i must allocate a dynamic array from a subroutine which should return such array to main function. The subroutine has already a return parameter so i thought of pass the array as I/O parameter. I tried the following program but it doesn't work (segmentation... (11 Replies)
Discussion started by: littleboyblu
11 Replies
6. Shell Programming and Scripting
Hi,
I'm just trying to use a dynamic index for some array elements that I'm accessing within a loop. Specifically, I want to access an array at variable position $counter and then also at location $counter + 1 and $counter + 2 (the second and third array positions after it) but I keep getting... (0 Replies)
Discussion started by: weak_code-fu
0 Replies
7. Shell Programming and Scripting
Hello,
Can somebody please give me a snippet for the below requirement.
I want to assign the values separeted by a comma to be assigned to a dynamic array.
If I give an input (read statement) like abc1,abc2,abc3,abc4,abc5, all these strings abc* should be assigned to an array like below... (2 Replies)
Discussion started by: suneelj
2 Replies
8. Programming
Hi everyone
I am developing an utility.
At some part of it I read directory entries to a dynamic array: struct list
It stores pointers to items: list.entries,
which are structures: struct entry
If a number of files in a directory is greater then number of elements an array was initially... (11 Replies)
Discussion started by: torbium
11 Replies
9. Shell Programming and Scripting
First of I would just like to state that I am not looking for you guys to just do my work for me, I do want to learn and actually understand everything that is happening.
Hey all, I am having trouble on this. What I need to do is... Write an executable C file that will take a text file (not a... (8 Replies)
Discussion started by: innvert
8 Replies
10. Programming
I put together a C function to add strings to a dynamic array of strings (mostly for educational purpose to explain pointers to my kid). It works, but sometimes one or two strings in the array becomes corrupted. Running example on 64 bit Ubuntu, gcc ver. 4.8.4
Hope my code is self-explanatory:
... (2 Replies)
Discussion started by: migurus
2 Replies
bdiff(1) General Commands Manual bdiff(1)
NAME
bdiff - diff for large files
SYNOPSIS
file1 file2 [n]
DESCRIPTION
compares two files and produces output identical to what would be produced by (see diff(1)), specifying changes that must be made to make
the files identical. is designed for handling files that are too large for but it can be used on files of any length.
processes files as follows:
o Ignore lines common to the beginning of both files.
o Split the remainder of each file into n-line segments, then execute on corresponding segments. The default value of n is 3500.
Command-Line Arguments
recognizes the following command-line arguments:
file1
file2 Names of two files to be compared by If file1 or file2 (but not both) is standard input is used instead.
n If a numeric value is present as the third argument, the files are divided into n-line segments before processing by
Default value for n is 3500. This option is useful when 3500-line segments are too large for processing by
Silent option suppresses diagnostic printing by
but does not suppress possible error messages from If the n and arguments are both used, the n argument must precede the
option on the command line or it will not be properly recognized.
EXTERNAL INFLUENCES
Environment Variables
determines the language in which messages are displayed.
If is not specified in the environment or is set to the empty string, the value of is used as a default for each unspecified or empty vari-
able. If is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of
If any internationalization variable contains an invalid setting, behaves as if all internationalization variables are set to "C". See
environ(5).
International Code Set Support
Single- and multi-byte character code sets are supported.
DIAGNOSTICS
Standard input was specified for both files.
Only one file can be specified as standard input.
A non-numeric value was specified for the
n (third) argument.
EXAMPLES
Find differences between two large files: and and place the result in a new file named
Do the same, but limit file length to 1400 lines; suppress error messages:
WARNINGS
produces output identical to output from and makes the necessary line-number corrections so that the output looks like it was processed by
However, depending on where the files are split, may or may not find a fully minimized set of file differences.
FILES
SEE ALSO
diff(1).
bdiff(1)