I have a simple script that runs an application,
This application can run for days at a time before it is finished and creates several thousand output files.
One problem I am having is that there are times when I look at some of the early output and decide that I need to change some of that parameters above, such as that values for EPOCHS. As it is, the value is read in and then the script runs about 2000 iterations using that value. There is no way to change the value without stopping the script, changing the value, and starting again.
It would be nice if I could have the script read in the values from a file before beginning a split.
If the values were read in before each split, then at least I could change the values in the control file and the revised values would get used for the next split. This is much better than constantly having to start over and clean up the partial output, etc.
I guess I could hack this up with sed or awk, but I have never opened and read the contents of a file from bash. The only similar things I have done are with file names, and I think it would be overly goofy to read in the values from a file name. (overly goofy even for me)
I thought I would ask if there was a standard way to do such a thing.
Hi,
I want to pratmeterze my scripts like,
my confRsync file contains varibale values for 1. host 2. Destination and 3. source like this, I want to read this values from this and assing to my makeRsyn.sh file's varibales.
how to do this? (1 Reply)
I am attempting to itterate through a file that has multiple lines and for each one read the entire line and use the value then to search in other files. The problem is that instead of an entire line I am getting each word in the file set as the value I am searching for. For example in File 1... (2 Replies)
Hi,
I have a 1-line file which looks like " First second third 4 five". I need to extract the number (here 4) in that line and put it in a variable. I will use the variable later to make few tests in my C shell script.
Can somebody help me? (2 Replies)
Hello,
I have a cat.dat file, i would like shell to read each 3 lines and set this 3 lines to 3 different variables.
my cat.dat is:
11
12
+380486461001
12
13
+380486461002
13
14
+380486461003
i want shell to make a loop and assign 1st line to student_id, 2nd line to... (4 Replies)
i have a file in this format
curyymm PRVYYMM CDDMmmYY bddMmmyy eddMmmyy
--------- ------- ------------ ---------- -----------
0906 0905 09Jun09 01Jun09 30Jun09
----------- --------- ------------ ------------ -----------
i need to read the... (5 Replies)
I have a csv file with the values seperated by commas.I want to extract these values one by one and assign to a variable using shell script.Any ideas or code? (11 Replies)
SHELL SCRIPT
Hi,
I have a file in which contents are as follows:
9999,abdc,123
9988,aba_12,2323
and so on
I want to read the contents of this file such that i can do
echo "This is $a followed by $b an then $c"
I tried the following but id did not work
cat test | cut -d ',' -f1|... (7 Replies)
Hi,
I have a text file with multiple lines, each having data in the below format
<DOB>,<ADDRESS>
I have to write a script which reads each line in the text file in loop, assign the values to these variables and do some further processing in it.
Using the following code prints the... (1 Reply)
Hi,
I have a text file with multiple lines, each having data in the below format <DOB>,<ADDRESS>
I have to write a script which reads each line in the text file in loop, assign the values to these variables and do some further processing in it.
Using the following code prints the values... (12 Replies)
Dear All,
I have been trying to do a simple task of extracting 2 fields from the file (3 rows) and store it in an array variable. I tried with:
#! /bin/bash
ch=`cut -f10 tmp.txt`
counter=0
for p in $pid
do
c=${ch}
echo "$c ..$counter"
counter=$((counter+1))... (2 Replies)
Discussion started by: ezhil01
2 Replies
LEARN ABOUT DEBIAN
mpb-split
MPB(1) MIT Photonic-Bands Package MPB(1)NAME
mpb-split - compute eigenmodes with MPB using multiple processes
SYNOPSIS
mpb-split NUM-SPLIT [DEFINITION]... [CTLFILE]...
DESCRIPTION
mpb-split is a parallelizing front-end to MIT Photonic Bands (MPB). For a computation with several k points, it splits the list of k
points over multiple processes. Of course, this will only benefit you on a system where different processes will run on different proces-
sors, such as an SMP or a cluster with automatic process migration (e.g. MOSIX). mpb-split is actually a trivial shell script, though, so
you can easily modify it if you need to use a special command to launch processes on other processors/machines.
MIT Photonic Bands (MPB) is a free program to compute the band structures (dispersion relations) and electromagnetic modes of periodic
dielectric structures, and is applicable both to photonic crystals (photonic band-gap materials) and a wide range of other optical prob-
lems.
More information on MPB, including a detailed manual, can be found online at the MPB home page: http://ab-initio.mit.edu/mpb/
A typical invocation of mpb-split looks like:
mpb-split num-split foo.ctl >& foo.out
This causes mpb-split to process the control file foo.ctl, divide the k points into num-split equal chunks, run each list in a separate
process with MPB, and redirect the output (in order) to foo.out. (One typically redirects output to a file, as the output is verbose and
contains a number of comma-delimited datasets that one can extract by grepping.)
Overall, the behavior and arguments are the same as for mpb except that the first argument must be the integer num-split.
What mpb-split technically does is to set the MPB variable k-split-num to num-split and k-split-index to the index (starting with 0) of the
chunk for each process. If you want, you can use these variables to divide the problem in some other way and then reset them to 1 and 0,
respectively.
BUGS
Send bug reports to S. G. Johnson, stevenj@alum.mit.edu.
AUTHORS
Written by Steven G. Johnson. Copyright (c) 1999, 2000, 2001, 2002 by the Massachusetts Institute of Technology.
SEE ALSO mpb(1), mpb-data(1)MPB March 13, 2002 MPB(1)