01-24-2013
You should allocate a char variable, fill it with the string constant "whereis " (e.g. sprintf) and the contents of your user input variable (e.g. strcpy), and supply that to the system call.
This User Gave Thanks to RudiC For This Post:
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
Wish if could provide some clues.
How do I dump all the C program variables(global) into say a file with their names and the values. So that when I restart the application again I could use this same file for reinitializing.Is this possible?
Thanks,
Reji (1 Reply)
Discussion started by: rejise
1 Replies
2. UNIX for Dummies Questions & Answers
I'm writing a simple program in unix and was wondering how mid switch I can run a program and get someone to enter variables for it i.e.:
#!/bin/csh -f
echo "If you wish to do v press v"
echo "If you wish to compile press c"
echo "If you wish to add an entry press a"
echo "If you wish to... (1 Reply)
Discussion started by: RichardB
1 Replies
3. Shell Programming and Scripting
Hello,
Can we pass shell variables like $PATH etc. to a awk program part
for example,
awk ' {
fieldValue=$PATH
....
}' file (1 Reply)
Discussion started by: Vishnu
1 Replies
4. Programming
Hi
i used the following code to copy a directory from a source location to dest.
argv contains the source loc i/p by the user.
strcpy(source,argv);
strcpy(dest,"/home/MainServer/Job_dir/");
system("cp -r $source $dest");
it complies properly but during execution of the program it... (2 Replies)
Discussion started by: mridula
2 Replies
5. Shell Programming and Scripting
hi
I wanted to access the C program variables in shell script.
This script is called from the same C program.
What are the ways in which i can access variables
thankx (3 Replies)
Discussion started by: bhakti
3 Replies
6. Shell Programming and Scripting
program name--test
#!/bin/bash
output1=`/home/user/a.c`
output2=`/home/user/a.c`
k=`$output1 + 1`
m=`$output2 + 1`
echo $k
echo $m
---------------------------------------------------------------------------
prgram name--a.c
#include<stdio.h>
int main() (1 Reply)
Discussion started by: sameworld1980
1 Replies
7. UNIX for Dummies Questions & Answers
Hi,
i want to write a script that executes a program (exec?) .
this program then requires a filename as input.
how do i give it this input in the script so the program will be complete run and close by the script.
e.g.
exec prog.exe
program then asks for filename
"enter filename:"... (1 Reply)
Discussion started by: tuathan
1 Replies
8. UNIX for Dummies Questions & Answers
Hello Geniuses of the unix world. please help, stupid chemist. I have the following script that I need to create a file. Doesnt make sense unless i explain this way: I need to create a file called summary.in I would like all these lines to be inserted however in the command line I would like the... (1 Reply)
Discussion started by: gingburg
1 Replies
9. UNIX Desktop Questions & Answers
So I need some help with this. Pardon me if I'm posting in the wrong forum, after some googling for my answer and finding nothing I found this forum. It seemed appropriate for what I was seeking. I just didnt find a forum that concerned the use of GDB. I'm learning to use the C language and GDB.... (2 Replies)
Discussion started by: Cambria
2 Replies
10. Shell Programming and Scripting
Hi there,
I need urgent help with a small program that is run via shell script. Unfortunately I only understand the bare basics of shell scripting and can't figure out how to do this.
We have a program that tests the connection between 3 servers. I have a script that lets the program run on... (15 Replies)
Discussion started by: Pherdinand
15 Replies
LEARN ABOUT DEBIAN
xtasprintf
XtMalloc(3) XT FUNCTIONS XtMalloc(3)
NAME
XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString - memory management functions
SYNTAX
char *XtMalloc(Cardinal size);
char *XtCalloc(Cardinal num, Cardinal size);
char *XtRealloc(char *ptr, Cardinal num);
void XtFree(char *ptr);
type *XtNew(type);
String XtNewString(String string);
Cardinal XtAsprintf(String *new_string, const char *format, ...);
ARGUMENTS
num Specifies the number of bytes or array elements.
ptr Specifies a pointer to the old storage or to the block of storage that is to be freed.
size Specifies the size of an array element (in bytes) or the number of bytes desired.
string Specifies a previously declared string.
type Specifies a previously declared data type.
new_string
Specifies a pointer to write a newly allocated string to.
format Specifies a formatting string as defined by sprintf(3c)
DESCRIPTION
The XtMalloc functions returns a pointer to a block of storage of at least the specified size bytes. If there is insufficient memory to
allocate the new block, XtMalloc calls XtErrorMsg.
The XtCalloc function allocates space for the specified number of array elements of the specified size and initializes the space to zero.
If there is insufficient memory to allocate the new block, XtCalloc calls XtErrorMsg.
The XtRealloc function changes the size of a block of storage (possibly moving it). Then, it copies the old contents (or as much as will
fit) into the new block and frees the old block. If there is insufficient memory to allocate the new block, XtRealloc calls XtErrorMsg.
If ptr is NULL, XtRealloc allocates the new storage without copying the old contents; that is, it simply calls XtMalloc.
The XtFree function returns storage and allows it to be reused. If ptr is NULL, XtFree returns immediately.
XtNew returns a pointer to the allocated storage. If there is insufficient memory to allocate the new block, XtNew calls XtErrorMsg.
XtNew is a convenience macro that calls XtMalloc with the following arguments specified:
((type *) XtMalloc((unsigned) sizeof(type))
XtNewString returns a pointer to the allocated storage. If there is insufficient memory to allocate the new block, XtNewString calls XtEr-
rorMsg. XtNewString is a convenience macro that calls XtMalloc with the following arguments specified:
(strcpy(XtMalloc((unsigned) strlen(str) + 1), str))
The XtAsprintf function allocates space for a string large enough to hold the string specified by the sprintf(3c) format pattern when used
with the remaining arguments, and fills it with the formatted results. The address of the allocated string is placed into the pointer
passed as ret. The length of the string (not including the terminating null byte) is returned. If there is insufficient memory to allo-
cate the new block, XtAsprintf calls XtErrorMsg.
SEE ALSO
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.1.3 XtMalloc(3)