HI im a novice with shell scripts but i need help with a random script I have this folder filled with 500 different file names... I need help creating a script that will take each filename and make a new folder named that filename and then move that file into the newly created folder. Then the... (1 Reply)
In shell Can I pass " to a program ? If not what is the work around ..?
Can I define * as a wild card charecter that will return all the values from
the files ..?
I am trying to create a tool that will return the values from a property file . This tool has to support all the wild card... (1 Reply)
Hi,
I have been working on Sun Solaris since a long time. Recently I got to work on RH Linux. My Linux version details are:
Linux 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
I have a simple command in my shell script:
export BKPTAG=`date... (3 Replies)
Hi all,
I am trying to make a Nodemanager work in RHEL 5
I got this script from 'oraclemiddleware.wordpress.com', and made appropriate changes to suit my weblogic installation.
I keep getting the error, "line 82: syntax error: unexpected end of file".
I have checked every line to make sure all... (4 Replies)
Hi Guys
I am new to Linux Shell Scripting . Can any one help me with this Task...files are attached for reference
Task 1: write a script to generate a large size report file MX0002_new.XML by using the template MX0001_new.XML. Shell script is recomended, and it can run on Linux without... (2 Replies)
Taking a class and having trouble with this whole section.
1. What is the name of the action the shell performs on your command-line after you hit the ENTER key (i.e., to cut your command-line syntax into its constituent tokens, including its commands, options and arguments)?
Hint: It is a... (1 Reply)
we need help with the syntax with this shell script,
if you could create this shell script we can donate to a charity etc.
we need to set up a directory called user3
inside directory user3 we need to create the following files :
afile, anyfile, anotherfile, afiletest, bfile. bfiletest, cfile,... (3 Replies)
I have a csv file that looks like this
Name,Food,Sport
James,Curry,Gym
Darren,Pizza,Football
Jim,Fish,Hockey
James,Sushi,Tennis
My code looks like this
IFS=","
sed 1d $file_name | while read Name Food Sport
do
mkdir -p $Name
#echo "=================="
#echo "Name: $Name" (3 Replies)
Discussion started by: darklord173
3 Replies
LEARN ABOUT REDHAT
system
SYSTEM(3) Linux Programmer's Manual SYSTEM(3)NAME
system - execute a shell command
SYNOPSIS
#include <stdlib.h>
int system(const char *string);
DESCRIPTION
system() executes a command specified in string by calling /bin/sh -c string, 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 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 string 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
ANSI C, POSIX.2, BSD 4.3
NOTES
As mentioned, system() ignores SIGINT and SIGQUIT. This may make programs that call it from a loop uninterruptable, 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 suid or sgid 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 suid or sgid 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.)
The check for the availability of /bin/sh is not actually performed; it is always assumed to be available. ISO C specifies the check, but
POSIX.2 specifies that the return shall always be non-zero, since a system without the shell is not conforming, and it is this that is
implemented.
It is possible for the shell command to return 127, so that code is not a sure indication that the execve() call failed.
SEE ALSO sh(1), signal(2), wait(2), exec(3)
2001-09-23 SYSTEM(3)