Programming :: C Arguments To Main - Can't Compare Values?
Jul 24, 2011Whats wrong with this:
Code:
#include <stdio.h>
int main(int argc, char *argv[])
{
if(argv[4] == "-verbose")
{
printf("Verbose is on");
[Code]...
Whats wrong with this:
Code:
#include <stdio.h>
int main(int argc, char *argv[])
{
if(argv[4] == "-verbose")
{
printf("Verbose is on");
[Code]...
I have a database of around 4000 files. I use rsync script to transfer from 2 separate updated hdd every month but I need a way to compare a .txt file or .xml file to the updated drive as I cannot use rsync delete because I can not mount all 3 drives at the same time?
View 9 Replies View RelatedI wrote a C program using Pthreads to compute the product of 2 matrices. Each element in the product matrix is computed in a separate thread. Eg: Thread (i,j) computes the element C[i][j] of the matrix C, where C=A*B. A is m*n, B is n*p, C is m*p. m,n,p are given as command-line arguments. A and B are initialized to random values from 1 to 10, while all elements of C are initialized to -1.But some threads do not get their arguments (i,j) correctly. So some elements C[i][j] still remain as -1, even after the program is over. My OS is Ubuntu 10.10 (Maverick Meerkat) 32-bit.I ran the program on another computer and it worked correctly. Is it due to a problem in the Pthreads library in my OS? Please help me. I have attached the source code.
View 3 Replies View RelatedHow can I get the total arguments in perl.To be more specific if I try to execute the command
Code:
perl -w myperl.pl ash ok kumar
I should be able to get all the command line arguments.
I know that @ARGV will store only the arguments passed but not the entire arguments.
I am using getopts to take parse optional arguments but i also pass in mandatory arguments first
[code]
#!/bin/bash
print_usage()
{
perror "$@"
}
arg1="$1"
arg2="$2"
shift 2
[Code]....
Actually build a script which can monitor the "DateTimeHourMinute" in a data file.
I wanted to compare the "DateTimeHourMinute" from the 2nd column against "DateTimeHourMinute" on the 3rd column which located in the same line.
Below is the data sample:
I have a large number of files, all of them named /*/*.xyz I need to match them to potential files name /*/*.abc I have tried find -name *xyz |awk '// {print '$NF'}' | awk '{print $NF }' but the result has the full path I just need the filename without the extention, and without the full path.
View 5 Replies View RelatedI would like to compare to mysql rows as follows:
Select count(*) from stocks2.historical where close*1.05 < (select open from stocks2.historical where date = date_add(date,interval 1 day))
and year(date)=2010;
The problem is with the "date" in bold... i want that date to be the date of the previous row. is there a way to do that purely with mysql? (naturally, i can write a script to go through and compare each date; what i'm asking for is a mysql solution.)
I have a script gdrGltoDataRefresh.sh .while try to run the script it's giving:
And in log file it's giving:
i was wondering if someone could help me figure out a script for global variables i'm trying to set for a group of command line arguments:
basically i'm trying to set: if $# = 3 then i want to search for each all string $1 $2 $3
if $# = 4
then i want to search for each all string $1 $2 $3 $4
I've been reading about getopt and getopts but it doesn't seem like it's possible to parse arguments like --foo or even -foo. I've started my own script trying to achieve this, but I'm still wondering if I'm losing performance and if there is a better way to do this task.
Also I'm using the [[ =~ ]] regex syntax which seems to be available only in newer bash versions, should it be a big issue? My bash version: GNU bash, version 4.1.7(2)-release (x86_64-unknown-linux-gnu)
[Code]...
I'm trying to compile the hidtouch driver, but hit a snag. The error I get is
[code]....
Context: this is the driver for the touchscreen attached to an LTSP client. The server uses the AMD64 arch, the client uses the 1386 arch, both Debian. The client does start, but lacking a pointer device the pointer is useless. The build takes place on the server, in the i386 chroot of the LTSP setup. Basically, I'm stuck now...
I need to call functions that match an input string (if input str = "func1", call func1), so I have this:
Code:
#include <stdio.h>
#include <string.h>
void function_a(void) { printf("Function A
"); }
[Code].....
In the above example, the functions take no input arguments. Can they take a different number of arguments, for example, function_a(int), function_c(int, int), function_e(int, char, int)? How can I do that?
I need to pass a large number of arguments to a function which takes variable number of arguments, such as gtk_list_store_new. But it doesn't look nice if i write something like gtk_list_store_new(NUM,TYPE_A,TYPE_B,TYPE_C,...,TYPE_OMEGA); because of large number of arguments. And, it will be a trouble to change number of columns because of need to manually change arguments to large number of such functions. So, how can i pass all the arguments to a function using a loop? Something like
Code:
for(i=0;i<NUM;i++)
{
push_arg(args[i]);
}
call_function(func);
?
Of course, i could just use asm code for this, but is there a portable way of doing so?
P.S. i mean C language.
My hosting server does not allow exec() or system() calls, for security reasons. I can call a cgi process in two ways. From a .shtml page, i can issue a directive like code...
View 11 Replies View RelatedI want to know how to get eg. the contents of a form on a webpage which has been passed to a server side PHP script, inside for example an array which I can read. I've been reading a ebook on PHP which as far as I can see doesn't cover this inside it.
View 1 Replies View Relatedwhat I am trying to do is to pass an argument to the standard input stream of a child process. I mean I create two programs .. first one invokes the other. second one contains something like
Code:
scanf("%d", &n);
now I want my first program to be able to pass a value to the second one so that it gets stored in n.
I am calling another executable in my application (C programing) using "system" command
which is user interactive program. now i want to pass those args in system command only.
system(" executable ");
Executable will expect 1,2 or 3.
1 is to continue
2 for do changes in settings
3 exit from application
how to pass these in to system command
I want to write a little time-saving alias for my .cshrc file that will move files and then cd to the directory I've moved them to. What I can't quite figure out is the syntax to say 'move all the arguments except the last one.' Here is what I have:
alias follow 'mv !:1-$-1 !:$; cd !:$'
This actually seems to work, but it also gives me an irritating error:
mv: cannot stat `destinationdirectory/-1': No such file or directory
Similarly, I tried:
alias follow 'mv !:*$#argv-1 !:$; cd !:$'
Again the move and cd are successful, but again there is an error:
mv: cannot stat `destinationdirectory/0-1': No such file or directory
I have a (rather large) database of mp3 track information. I also have several directories of the actual mp3s. I'm trying to write a simple bash script that will check the contents of the directories against what's in the database, and upon finding a file that isn't in the database, do something.
Here's what I have so far:
Code:
The trouble I'm having (in the sample directory of "/mnt/music/B/Beatles, The/" the file "Beatles, The - Taxman.mp3" isn't in the database.) is getting it to actually trigger an error when an entry isn't in the database.
Once triggering on a non-entered file is working, any way to get it to traverse the entire /mnt/music hierarchy?
Dear expertsI have files like
ABD : 5869 events, relative ratio : 1.173800E-01 , sum of ratios : 1.173800E-01
VBD : 12147 events, relative ratio : 2.429400E-01 , sum of ratios : 3.603200E-01
SDF : 17000 events, relative ratio : 3.400000E-01 , sum of ratios : 7.003200E-01
[code]....
I am trying to compare two filenames including the paths. Basically if two paths are similar then my program wants to display message. So I need to check for if two pathnames are same in the sorce and destination. So I was trying for the code to compare tow filename sincluding "" and if the Parent FIle Path is found in the child file path then I need to displays ome message. I was trying to modify something like this:
#!/bin/ksh
# Sample script
file1="C:TextLatestArticleNews.txt"
[code]....
i am trying this query to compare records of two different tables...i m geting this message!! no required out putvalues for these ($jobTitle $industry $stationBase $gender $maritalStatus)are coming from textboxes!here is the code...
PHP Code:
$query = "(SELECT *,
MATCH(industry, gender, maritalStatus , typeofWorkPosition , preferCity) AGAINST ('$
[code]....
I have two files with user DN's that exported from two different LDAP directories. I wanted to write a script that reads(checks) users (cn=user1) in file Ack to see if users(cn=user1) exists in file B and give me nice output with what users are missing in file B.I have around 30k users in file A with following format..Quote:
cn=user1,ou=some,o=org
cn=user2,ou=some,o=org
cn=user3,ou=some,o=org
[code]...
Is it possible to pass arguments to a source file in a bash script? For example
#!/bin/sh
#
. /dir1/dir1/funclib -a -b
How would you check for the passed arguments in funclib without getting confused with any arguments passed to the main script?
First, I made a simply script which let me download a file from a filehosting site on my server, but I can only put one link there, so I need help how to put multiple links in.Here is my script:
Code:
#!/bin/bash
echo "Enter URL:"
[code]...
Running a program with arguments using a shell script
View 1 Replies View RelatedI need to write a wrapper function around the mvprintw function, like so:
int smvprintw( ? )
{
// Do various checks/modifications on the first two arguments (int y,
int x) first,
// and then
return mvprintw ( ? );
}
How should I write the args for smvprintw so that I can pass all the data correctly to mvprintw, and also do my checks on the first two args (for example, to modify them)? I'm confused by the prototype of mvprintw: This is mvprintw as listed in the man pages:
int mvprintw(int y, int x, const char *fmt, ...);
And this is how I saw it in ncurses.h:
extern NCURSES_EXPORT(int) mvprintw (int,int, const char *,...)
I believe the "..." refers to the unknown number of items after const char * fmt. Will it suffice to do something like "int smvprintw(int y, int x, const char * fmt, void * etc)" and then "mvprintw(y, x, fmt, etc)" inside the function?
I've started dabbling with the case statement in order to pass some option's arguments into variables. I do not think I am doing this right.
Code:
usage() {
echo "Usage: $0 [-z|--snooze] [-c|--channel] [-p|--playlist]
[-m|--message] [-v|--mpcvolume]"
[code]....
As you can see, I want to pass arguments depending on the option(s) chosen by the user; ie. --snooze, or --channel. By default, if no options are chosen, I'll display a usage message; though in the future I'll provide some sane defaults. I'd like to create a case statement to handle passing arguments to any number of options; something like:
Code:
wakethehellup.sh --snooze 20 --message 'wake up!'
and for the other arguments, it would have a default set. The case statement I provided fails with a syntax error "syntax error near unexpected token `$2'" near the '--snooze' in the statement, so I take it you can't pass a parameter in this way; but I'm confused as to how I'm supposed to pass different parameters to different options without the options being confused as parameters.
This is what I have:
Code:
#!/bin/bash
#ascript.sh
[code]...