Hello;
I'm trying to write a script to capture any hardware error from logs/syslog on my SUSE 10 servers so i can be notified if we have any hardware issues such a bad fan or battery, etc..
Thanks in advance for any help (2 Replies)
I'm Using this script to find the time of a file. I'm very much new to PERL
and found this script posted by some one on this forum.
It runs perfectly fine, just that it gives me following errors with the
accurate output as well. I jus want the output to be stored in another file
so that i can... (0 Replies)
Hi - I am trying to grep all "ORA" errors in a log files.I have to grep all ORA errors except one error for example ORA-01653.How can exclude that error in "grep" command?
In following "grep" command I want to exclude "ORA-01653" error
grep -i ORA alert.log >>/tmp/ora_errors.txt
... (7 Replies)
Hi,
I have a bash script which calls a few "make". I would like to know whether the makefile failed with any errors. How do I do that in the script?
Thanks,
S (2 Replies)
I have a shell script which select total count from a table and use its value in a if condition like below
connect_string="username/password@tnsname"
tot=`sqlplus -s $connect_string << EOF
set echo off
set feedback off
set head off
select count(*) from test_table;
EOF
`
if
then
echo... (2 Replies)
Hi Guys,
I wanted to create an Unix Shell Script that should fetch a particular string from a text file on a particular date.
We all know Oracle generates alert logs for each and every day for every actions in the database.
I have an alert log file now where it contains for about a months... (4 Replies)
I want to check for "errors" or "ORA-" in Y.if there is an error then exit
Y=`sqlplus -s user/passwd<< EOF
exec test_Proc;
exit;
EOF`
if ; then
exit 1
fi
but this doesnt work (6 Replies)
Discussion started by: haadiya
6 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)