Hi,
Here are my two questions:

1. I am now learning to manage my code with CVS, and I just want to make a repository for my C++ files, Makefile and bash and python scripts only, not the object...

same machine. I submitted my jobs background one after the other so that they can run in parallel. All the jobs running the same executable with different commandline argument.

Hi,
I call "set -o notify" to notify me when my background jobs finish. I find that the messages upon finishing are different: for some job, it starts sometimes with "[jobID]", sometimes with...

More info:
The reason why I don't use "$@" is that the arguments to the bash script is not completely those for the executable. Some of them are just arguments only to the bash script. So actually...

Hi,
I'd like to pass arguments with space inside to a bash script and further into an executable called inside the script. My bash script looks like:

#!/bin/bash
ARG_OPTS=""
while [[ -n "$1"...

Hi,
Here is my code,

ids=(1 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 90 100 110 120)
for ((i=0;i<${#ids};i++)); do
awk '{ print ${ids[${i}]}" "$1; }' > ${TMP} <...

Hi,
I was wondering:
if the memory allocation in the following codes is static or dynamic,
why the upper limits on their sizes are different,
why some of them would cause segment fault?
what ...

I perhaps have to resort to multiple thread programming to reduce computational time. I am now studying how to use POSIX library.
I can access a cluster with 8 CPUs, each of which has one core. I...

Hi,
I am using copy_n from GNU C++ Library under Ubuntu 8.10. My code is like this:

#include <ext/algorithm>
using namespace std;

void myfun(char * flags ) {
char * flags_new = new...

Hi,
I am goint to create a very large array but have this error when running this code

#include <iostream>
#include <limits.h>
#include <cstddef>
#include <cmath>
using namespace std;

int...

Hi Mike,
Removing "exec" works! Thanks a lot! Sorry for a little late, for I can come back to my office only on working days to have a try.
It seems that log out twice doesn't happen to me? I...

Hi,
These days I have to install a higher version of bash under my $HOME on my office server. I hope to make the new bash automatically run both when I ssh to my server and when I boot into my...

Hi,
How to get declaration in C mode with tags in Emacs. I only know how to get definition of self defined functions. But how to jump to their declarations and also how to get the declarations of...

Hi,
I am beginning to use bashdb to debug my shell script. Here are my questions:
1. With "bash --debugger ./myscript.sh" it will run to finish without stop, while with "bashdb ./myscript.sh" would...

Thank you! Got it!

Hi,
I am trying to debug my shell script by bashdb. My script take as argument "--gdb", so I wrote

However, this way it will produce error that bashdb:


If I quote --gdb as

then I will...

Hi,
I was wondering how to debug python script without adding pdb module to the script file. Say, I have a script test.py without adding "import pdb" and "pdb.set_trace()". Can I debug it in Python...

Please comment if you have some. Any help is appreciated.

The Makefile is something like:

LDFLAGS=-static -lm -ljpeg -lpng -lz
OPTIMIZE_FLAG = -ggdb3 -DDEBUG
CXXFLAGS = -Wall $(OPTIMIZE_FLAG)
absurdity: xxx.o
$(CXX) $(CXXFLAGS) -o $@ $^ $(LDFLAGS)...

What does "inlined code" mean?
The snippet of code is in main function and does not have anything specified as "inline".

In the following code:

for(int i = 0; i < argc; i++)
cout << (i > 0 ? " " : "") << argv << (i < argc - 1 ? " \\" : "")
<< endl;

I try to use "next" to step over, but always...

Hi,
I am new to using C and C++ libraries. So my questions might seem to be naive.

1. When installed, will the source files ( .c or .cpp) of a library be placed into some system directory like...

Hi, I am now trying to install a C library zlib to be /usr/local/include/zlib, /usr/local/lib/zlib and /usr/local/share/man. Here is the relevent part in the configure file of the library:


...

I think it is not a newline. Here goes the context:

if [[ -d ${RESULT_DIR} ]]; then
echo "Directory ${RESULT_DIR} already exists."
exit 1
fi

...

Hi,
I read something like "\mkdir ${RESULT_DIR}". Just curious about why "\" is added before the command? Thanks for help!

Thanks! Now I understand \1 and \(some match inside\).
But still, what doest "^[^=]*" mean? Why there are two ^s?
In the reply, what does"Erase any thing from the beginning of a line to the = sign...

Hi,
I am reading a command in shell script using sed:
echo $1 | sed -e "s/^[^=]*=\(.*\)$/\1/"

what I don't understand is the sed command. I only know it tries to substitute "^[^=]*=\(.*\)$/"...

can any function, for example printf, restart from beginning of the same line? So we will not have multiple lines of output
Another question, any way to retrieve the previous ouput that have been...

Hi,
I am sorting an double array, using qsort()

#include<stdio.h>
#include<stdlib.h>
...
int compar( const void *arg1, const void *arg2 )
{
return ( * ( double **) arg1 >= * (double** )...

Thank you!

Hi,
I have an array. I put its definition in a .c file and externally delare it in a .h file like this:
//.c file
unsigned char jetmap[][]={
{0, 207, 255},
{0, 223, 255},
...

Thanks a lot!

Hi,Thanks!
I still have the same questions:
Since an unsigned char can hold a value as large as 255, why bother to use integer as intermediate?
Is there something else wrong? Is it correct to use...

Thanks.

In fact I just made up the "test.txt" file. In my real case, I have to read in data ( each is an integer and ranges from 0 to 255) from a file into an unsigned char array that are...

Hi,
I got this message "Windows has triggered a breakpoint in inout.exe. This may be due to a corruption of the heap, and indicates a bug in inout.exe or any of the DLLs it has loaded. The output...

Hi,
When using "..printf Functions" with Conversion specifier type "%g", it gives different results under different environment. For example, "sprintf(string,"%g",1e-6);" gives "1e-006" in Windows...