07-08-2010
help on COMM command please
could some one please explain with examples how comm -12 & comm -3 works. I am confused with manual page, Thankyou.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
See my other post on sdiff ....
I don't think sdiff is able to do what I want.
The 'comm' command does what I need and works fine as
far as the logic and results.
The problem I'm having is with the output format, it outputs 3 columns of data,
but because of the way it starts each line... (2 Replies)
Discussion started by: cowpoke
2 Replies
2. UNIX for Advanced & Expert Users
i have 2 files that contains a sorted list of IP addresses.
file_A contains a list of all IPs
file_B contains only around 50% of what is in file_A.
I tried to execute
comm -23 file_A file_B > file_C
to get the difference. My objective is to put all the IPs that are in file_A but not... (1 Reply)
Discussion started by: tads98
1 Replies
3. Shell Programming and Scripting
Hi
I have issue with "comm " command
file-1
----
l65059
l65407
l68607
l68810
l69143
l71310
l72918
l73146
l73273
l76411
file-2
----- (8 Replies)
Discussion started by: amitrajvarma
8 Replies
4. UNIX for Dummies Questions & Answers
Hi all,
I need help in comm command , I am having 2 files . I have to display the common line in the two file only onnce and i have to also display the non common line as well.
tmpcut1 -- First file
cat tmpcut1
smstr_303000_O_432830_... f_c2_queue_sys30.sys30 RUNNING 10 1000... (1 Reply)
Discussion started by: arunkumar_mca
1 Replies
5. Shell Programming and Scripting
I need to compare 2 files. I need to see if 1 file has records that are not in a second file. I did some searching and found the 'comm' command. According to the man pages
comm -23 test1.txt test2.txt
Will tell me what is in file 1 and not in file 2. So I did a simple test
test1.txt has the... (3 Replies)
Discussion started by: guessingo
3 Replies
6. UNIX for Dummies Questions & Answers
Hello , I am trying to get contents which are only present in a.csv ,so using comm -23
cat a.csv | sort > a.csv
cat b.csv | sort > b.csv
comm -23 a.csv b.csv > c.csv.
a.csv
SKU COUNTRY CURRENCY PRICE_LIST_TYPE LIST_PRICE_EFFECTIVE_DATE
TG430ZA ZA USD DF ... (4 Replies)
Discussion started by: RaviTej
4 Replies
7. Linux
The manual does not cover this very well. What do the following compares will do ?
1) comm -13 file1 file2: will it display what is in file2 not in file1?
2) comm -23 file1 file2: will it display what in 1 but not in 2 ?
Thanks (5 Replies)
Discussion started by: mrn6430
5 Replies
8. Shell Programming and Scripting
Hello all ,
I have two files a.txt and b.txt which have same content . They contain data that is fetched from database through a java program. When I delete a line in a.txt and run the below command
comm -13 a.txt b.txt
I am not getting the expected result i.e. the line i deleted from... (5 Replies)
Discussion started by: RaviTej
5 Replies
9. UNIX for Beginners Questions & Answers
Hi,
How can i ignore case between 2 files in unix using COMM command.
2 input files are:
-bash-4.1$ more x2.txt
HELLO
hi
HI
raj
-bash-4.1$ more x3.txt
hello
hi
raj
COMM command:
-bash-4.1$ comm x2.txt x3.txt
hello
HELLO
hi (3 Replies)
Discussion started by: raju2016
3 Replies
10. Shell Programming and Scripting
Given the output below (simplified) extracted from the comparison of two curl -I commands saved in two different files, I am looking for the best approach to highlight the following scenarios in a script:
this header exists only in file1.txt but this one does not
this one exists in both cases... (1 Reply)
Discussion started by: muppets
1 Replies
LEARN ABOUT OSX
mpi_graph_neighbors
MPI_Graph_neighbors(3OpenMPI) MPI_Graph_neighbors(3OpenMPI)
NAME
MPI_Graph_neighbors - Returns the neighbors of a node associated with a graph topology.
SYNTAX
C Syntax
#include <mpi.h>
int MPI_Graph_neighbors(MPI_Comm comm, int rank, int maxneighbors,
int *neighbors)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_GRAPH_NEIGHBORS(COMM, RANK, MAXNEIGHBORS, NEIGHBORS, IERROR)
INTEGER COMM, RANK, MAXNEIGHBORS, NEIGHBORS(*), IERROR
C++ Syntax
#include <mpi.h>
void Graphcomm::Get_neighbors(int rank, int maxneighbors,
int neighbors[]) const
INPUT PARAMETERS
comm Communicator with graph topology (handle).
rank Rank of process in group of comm (integer).
maxneighbors
Size of array neighbors (integer).
OUTPUT PARAMETERS
neighbors Ranks of processes that are neighbors to specified process (array of integers).
IERROR Fortran only: Error status (integer).
DESCRIPTION
Example: Suppose that comm is a communicator with a shuffle-exchange topology. The group has 2n members. Each process is labeled by
a(1), ..., a(n) with a(i) E{0,1}, and has three neighbors: exchange (a(1), ..., a(n) = a(1), ..., a(n-1), a(n) (a = 1 - a), shuffle
(a(1), ..., a(n)) = a(2), ..., a(n), a(1), and unshuffle (a(1), ..., a(n)) = a(n), a(1), ..., a(n-1). The graph adjacency list is illus-
trated below for n=3.
exchange shuffle unshuffle
node neighbors(1) neighbors(2) neighbors(3)
0(000) 1 0 0
1(001) 0 2 4
2(010) 3 4 1
3(011) 2 6 5
4(100) 5 1 2
5(101) 4 3 6
6(110) 7 5 3
7(111) 6 7 7
Suppose that the communicator comm has this topology associated with it. The following code fragment cycles through the three types of
neighbors and performs an appropriate permutation for each.
C assume: each process has stored a real number A.
C extract neighborhood information
CALL MPI_COMM_RANK(comm, myrank, ierr)
CALL MPI_GRAPH_NEIGHBORS(comm, myrank, 3, neighbors, ierr)
C perform exchange permutation
CALL MPI_SENDRECV_REPLACE(A, 1, MPI_REAL, neighbors(1), 0,
+ neighbors(1), 0, comm, status, ierr)
C perform shuffle permutation
CALL MPI_SENDRECV_REPLACE(A, 1, MPI_REAL, neighbors(2), 0,
+ neighbors(3), 0, comm, status, ierr)
C perform unshuffle permutation
CALL MPI_SENDRECV_REPLACE(A, 1, MPI_REAL, neighbors(3), 0,
+ neighbors(2), 0, comm, status, ierr)
ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func-
tions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism
will be used to throw an MPI:Exception object.
Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for
I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be
used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.
SEE ALSO
MPI_Graph_neighbors_count
Open MPI 1.2 September 2006 MPI_Graph_neighbors(3OpenMPI)