09-19-2007
Thanks a lor porter .... it WORKED !!!!!!!!! but here i just want to know why you asked me to check for "ls -ld status" ..
Sanjay,
I have already mentioned that status has execution permission..
-Chanakya
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have a K shell
a.ksh
function abc {
// Some logic
}
In
b.ksh
i have included the a.ksh
./a.ksh
I want to call the abc function from this b.ksh script.
Thanks
Vijay (2 Replies)
Discussion started by: vijaykrc
2 Replies
2. Shell Programming and Scripting
Hi all,
I need to call some script (s1) from within my shell script (s2). s1 accepts parameters and I want to feed it with values of params from my script. I tried many things but none work (I am so much of a beginner), please help
one of my attempts :
.
.
.
param1="hehe"
param2="haha"
... (12 Replies)
Discussion started by: Lorna
12 Replies
3. Shell Programming and Scripting
Hello gurus,
I have three korn shell script 3.1, 3.2, 3.3. I would like to call three shell script in one shell script.
i m looking for something like this
call 3.1;
If 3.1 = "complete" then
call 3.2;
if 3.2 = ''COMPlete" then
call 3.3;
else
exit
The... (1 Reply)
Discussion started by: shashi369
1 Replies
4. Shell Programming and Scripting
I need to write a c program that uses the fork and excel system calls to run the shell script mode invoked like this: "./mode 644 ls -l" (that is the argumetns will always be 644 ls -l)
here's the mode script:
#!/bin/sh
octal="$1"
shift
find . -maxdepth 1 -perm $octal -exec $@ {} \;
... (3 Replies)
Discussion started by: computethis
3 Replies
5. UNIX for Dummies Questions & Answers
On bash I run precompiled c Program as follows:
./create_cust 1 10000 US S > us_cust.csv
create_cust is a c program and requires 4 parameters.
I am redirecting the output of this program to csv file
I need to run this same program in perl
I am aware of exec command though not... (7 Replies)
Discussion started by: gkbond
7 Replies
6. Shell Programming and Scripting
Hi,
I have a shell script which connects to a database and fetches the count of the records from a table. I want to embed this whole script in a C program. Also the count fetched should be available in the C program for further usage.
Please let me know how this can be done.
Thanks
... (0 Replies)
Discussion started by: swasid
0 Replies
7. Programming
Hi,
I have a shell script which connects to a database and fetches the count of the records from a table. I want to embed this whole script in a C program. Also the count fetched should be available in the C program for further usage.
Please let me know how this can be done.
Thanks (9 Replies)
Discussion started by: swasid
9 Replies
8. Shell Programming and Scripting
How to call a perl script in shell program / shell scripting.
PLS HELP ME (2 Replies)
Discussion started by: hravisankar
2 Replies
9. Homework & Coursework Questions
Long story short: I'm working inside of a Unix SSH under a bash shell. I have to code a C program that generates a random number. Then I have to call the compiled C program with a Perl program to run the C program 20 times and put all the generated random #s into a text file, then print that text... (1 Reply)
Discussion started by: jdkirby
1 Replies
10. Shell Programming and Scripting
Hi,
I'm trying to test one unix shell script in dev environment. But I'm not sure how to pass the environment in my java program calling code. I'm trying to use -DconsumerEnv="DEV" but unfortunately I get 'null' while trying to print the value from java class.
System.out.println("Environment: "+... (4 Replies)
Discussion started by: Pramit
4 Replies
SYSTEM(3) Linux Programmer's Manual SYSTEM(3)
NAME
system - execute a shell command
SYNOPSIS
#include <stdlib.h>
int system(const char *command);
DESCRIPTION
system() executes a command specified in command by calling /bin/sh -c command, and returns after the command has been completed. During
execution of the command, SIGCHLD will be blocked, and SIGINT and SIGQUIT will be ignored.
RETURN VALUE
The value returned is -1 on error (e.g. fork(2) failed), and the return status of the command otherwise. This latter return status is in
the format specified in wait(2). Thus, the exit code of the command will be WEXITSTATUS(status). In case /bin/sh could not be executed,
the exit status will be that of a command that does exit(127).
If the value of command is NULL, system() returns nonzero if the shell is available, and zero if not.
system() does not affect the wait status of any other children.
CONFORMING TO
C89, C99, POSIX.1-2001.
NOTES
If the _XOPEN_SOURCE feature test macro is defined (before including any header files), then the macros described in wait(2) (WEXITSTA-
TUS(), etc.) are made available when including <stdlib.h>.
As mentioned, system() ignores SIGINT and SIGQUIT. This may make programs that call it from a loop uninterruptible, unless they take care
themselves to check the exit status of the child. E.g.
while (something) {
int ret = system("foo");
if (WIFSIGNALED(ret) &&
(WTERMSIG(ret) == SIGINT || WTERMSIG(ret) == SIGQUIT))
break;
}
Do not use system() from a program with set-user-ID or set-group-ID privileges, because strange values for some environment variables might
be used to subvert system integrity. Use the exec(3) family of functions instead, but not execlp(3) or execvp(3). system() will not, in
fact, work properly from programs with set-user-ID or set-group-ID privileges on systems on which /bin/sh is bash version 2, since bash 2
drops privileges on startup. (Debian uses a modified bash which does not do this when invoked as sh.)
In versions of glibc before 2.1.3, the check for the availability of /bin/sh was not actually performed if command was NULL; instead it was
always assumed to be available, and system() always returned 1 in this case. Since glibc 2.1.3, this check is performed because, even
though POSIX.1-2001 requires a conforming implementation to provide a shell, that shell may not be available or executable if the calling
program has previously called chroot(2) (which is not specified by POSIX.1-2001).
It is possible for the shell command to return 127, so that code is not a sure indication that the execve(2) call failed.
SEE ALSO
sh(1), signal(2), wait(2), exec(3)
COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2010-09-10 SYSTEM(3)