Hi,
I have a program that runs two threads in stead of two processes. I want to use pipe to redirect the output of the first thread to the input of the second thread.
One thread is continuously writing to a pipe, and the other thread will read from the pipe.
How do I do that?
Is there... (2 Replies)
i am new to linux programming. can anyone answer my question?
there is one pipe file "my_pipe"
prw-r--r-- 1 john rnd 32 Aug 17 19:45 my_pipe
how to output string message (char*) to this pipe? which API should I use? (3 Replies)
anybody can help, plz:
I want to pass the output of "ls" to "grep":
ftp -n host <<!
USER user passwd
ls
bye
! | grep file
exit 0
It does not work!!
Any idea??
Sami (7 Replies)
I am using grep and I want the output to go into two files without going to the screen. I used tee to get the output into two files, but it is also putting the output on the screen which i do not want. Can this be fixed. (2 Replies)
Hi,
I am having a list of directories with different login id's. My requirement is that i need to list the directories of my id and need to delete them. So i am using following code
ls -ltr ¦ grep userid ¦ rm -rf
But this is not working. So is there any way of doing it. Please note... (3 Replies)
Hi All. Thanks for your help in advance.
I have a requirement to examine the number of delimiters in each record of a file. If the record has the expected number of delimiters it should be passed into a 'good' file. If it does not, the record should be passed into a 'bad' file. I have been able... (8 Replies)
I can use pipe output to a file. For example
./somescript.sh > output.txt
But for example if the output from ./somescript.sh is slow. like if it prints one line every minute then output.txt is not updated every minute. Lines are written to output.txt in one go, hence have to wait for the whole... (2 Replies)
Hi All,
i have the following command
df|awk '{print $5}'|grep /| egrep -v '^/$|/usr|/opt|/var/log|/home|/tmp'
output looks like:
/filesystem/number1
/filesystem/number2
/filesystem3
/possiblymoreoutput
i want the output to look like the below (either in a file or to output to... (3 Replies)
I'm trying to get an output to echo on the next line in a given color and outputted next to a label.
Sorry if that's a bit vague, see below.
#!/bin/bash
YELLOW=$(tput setaf 3 && tput bold)
echo -n 'plaintext' | openssl md2 || read hash
echo "$YELLOW Hash:$hash"
But I can't seem to get the... (2 Replies)
Hi,
I want to grep multiple patterns from multiple files and save to multiple outputs. As of now its outputting all to the same file when I use this command.
Input : 108 files to check for 390 patterns to check for. output I need to 108 files with the searched patterns.
Xargs -I {} grep... (3 Replies)
Discussion started by: Diya123
3 Replies
LEARN ABOUT DEBIAN
mcxmap
mcxmap(1) USER COMMANDS mcxmap(1)
NAME
mcxmap - permute or remap the indices of graphs and matrices.
SYNOPSIS
mcxmap -imx fname (input) [-o fname (output)] [-make-map (output map file name)] [-make-mapc (output map file name)] [-make-mapr (output map
file name)] [-cmul a (coefficient)] [-cshift b (translate)] [-rmul c (coefficient)] [-rshift d (translate)] [-mul e (coefficient)] [-shift f
(translate)] [-map fname (row/col map file)] [-rmap fname (row map file)] [-cmap fname (column map file)] [-mapi fname (row/col map file
(use inverse))] [-rmapi fname (row map file (use inverse))] [-cmapi fname (column map file (use inverse))] [-tab fname (read (and map) tab
file)]
DESCRIPTION
This utility relabels graphs or matrices. Its main use is in applying a map file to a given matrix or graph. A map file contains a so called
map matrix in mcl format that has some special properties (given further below). The functionality of mcxmap can also be provided by mcx, as
a mapped matrix (i.e. the result of applying a map matrix to another matrix) is simply the usual matrix product of a matrix and a map
matrix. However, mcx will construct a new matrix and leave the original matrix to be mapped alone. When dealing with huge matrices, consid-
erable gains in efficiency memory-wise and time-wise can be achieved by doing the mapping in-place. This is what mcxmap does. In the
future, its functionality may be embedded in mcx with new mcx operators.
The special properties of a map matrix are
o The column domain and row domain are of the same cardinality.
o Each column has exactly one entry.
o Each row domain index occurs in exactly one column.
These properties imply that the matrix can be used as a map from the column domain onto the row domain. An example map matrix is found in
the EXAMPLES Section.
OPTIONS
-o fname (output file)
Output file.
-imx fname (input file)
Input file.
-map fname (row/col map file))
-rmap fname (row map file)
-cmap fname (column map file)
-mapi fname (row/col map file (use inverse))
-rmapi fname (row map fil (use inverse))
-cmapi fname (column map fil (use inverse))
Different ways to specify map files.
-make-map (output map file name)
-make-mapc (output map file name)
-make-mapr (output map file name)
Generate a map that maps the specified domain onto the appropriate canonical domain and write the map matrix to file.
-cmul a (coefficient)
-cshift b (translate)
These options have affect if neither a column map file nor column canonification is specified. If any of the first two options is used,
column indices i are mapped to a*i+b.
-rmul c (coefficient)
-rshift d (translate)
These options have affect if neither a row map file nor row canonification is specified. If any of the first two options is used,
indices i are mapped to c*i+d.
-mul e (coefficient)
-shift f (translate)
If a map file is specified for a given domain, neither a map file nor canonification is specified. If any of the first two options is
used, the indices i will be mapped to e*i+f.
-tab fname (read (and map) tab file)
This option requires the -map option. mcxmap will output the mapped tab definition.
EXAMPLES
The matrix below has two canonical domains which are identical. It denotes a map of the canonical domain onto itself, in which node 0 is
relabeled to 8, node 1 is relabeled to 5, et cetera.
(mclheader
mcltype matrix
dimensions 12x12
)
(mclmatrix
begin
0 8 $
1 5 $
2 3 $
3 2 $
4 4 $
5 6 $
6 7 $
7 9 $
8 1 $
9 10 $
10 11 $
11 0 $
)
AUTHOR
Stijn van Dongen.
SEE ALSO
mcxio(5), mcx(1), mcxsubs(1), and mclfamily(7) for an overview of all the documentation and the utilities in the mcl family.
mcxmap 12-068 8 Mar 2012 mcxmap(1)