Sponsored Content
Top Forums Programming A question about printing error message with perror Post 302344214 by dariyoosh on Saturday 15th of August 2009 06:19:09 AM
Old 08-15-2009
Question A question about printing error message with perror

Dear all,


I use perror in order to print an error message to the standar error. For example
if a C program is called without its two necessary command line parameters
then :

Code:
if (argc != 3)
{
    perror("use: ./myProgram <source file> <target file>\n");
    return 1;
}

Now the problem is whenever this error message is printed, I have this:
Code:
use: ./myProgram <source file> <target file>\n
: Success

What I don't understand is why there is a second line: ":Success"??
Is there a way to remove it? as I want to print an error message, it doesn't
really make sense to print Success.


Thanks in advance,
Kind Regards,
Smilie

Last edited by dariyoosh; 08-15-2009 at 07:37 AM..
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

“Ostream” object is not printing message on HP-UNIX for debug mode

The following C++ code segment is not working in debug mode build on HP-UNIX machine. It is not printing "Hello World" message on the screen. While it is working fine in release mode build. ============================================== class KLogStreamBuf : public streambuf { public:... (0 Replies)
Discussion started by: heena
0 Replies

2. Solaris

Error message printing to Windows on port 515

Hello, We have an application which runs on Windows 2000 that responds to prrint requests by anyone using RFC1179 protocol on port 515. We are getting an error message when submitting print requests from Sun Solaris 9. "Windows 2000 LPD Server Error: Specified printer does not exist"... (0 Replies)
Discussion started by: pauls
0 Replies

3. Programming

does perror() set errno?

here the program gives a odd result: #include <stdio.h> int main(){ perror("first"); perror("next"); return 0; } result: first: Success next: Illegal seek why? any resonable explanation? i found no information about this in man pages. thanks in advance (2 Replies)
Discussion started by: ebd
2 Replies

4. Shell Programming and Scripting

shell script, why isn't if printing message?

Why isn't printing message? 1 #!/bin/sh 2 3 something(){ 4 echo "Inside something" 5 echo $1 $2 6 } 7 val=$(something "Hello " "world") But it prints. 1 #!/bin/sh 2 3 something(){ 4 echo "Inside something" 5 echo $1 $2 6 } 7... (4 Replies)
Discussion started by: cola
4 Replies

5. Post Here to Contact Site Administrators and Moderators

Message Editor question

Hia, this is a very low priority request, but I am slightly annoyed by the behaviour of the tags in the message editor. They behave assymetric in the sense that the opening tag is introducing an empty line, and the closing tag is not, and can't be convinced to do otherwise. I know I am... (1 Reply)
Discussion started by: Andre_Merzky
1 Replies

6. UNIX for Dummies Questions & Answers

perror with signals

I have following problem with this code.. First time trough the main loop..... perror gives ....blocked signal:success(all other times gives illlegal seek) Should every time trought the main loop be success?? And the perror otside of main loop...didn't change mask:success That line of code... (2 Replies)
Discussion started by: joker40
2 Replies

7. Programming

help with C programming, perror

i am trying to use the perror function: something like perror("WRONG!!!"); but when i see the message in the terminal, it comes out like WRONG!!! : Success How can i change it to WRONG!!! : WRONG!!! well i just want to have my own custom message for the part after the colon... (1 Reply)
Discussion started by: omega666
1 Replies

8. Shell Programming and Scripting

Printing all lines before a specific string and a custom message 2 lines after

Hello all, I need to print all the lines before a specific string and print a custom message 2 lines after that. So far I have managed to print everything up the string, inclusively, but I can't figure out how to print the 2 lines after that and the custom message. My code thus far is:... (4 Replies)
Discussion started by: SEinT
4 Replies

9. Shell Programming and Scripting

Printing a message in file without opening it in perl

Hello friends, i have a perl script as below ... for (0 ..$#values) { ##want to print some message here in Report.txt file print `find /abc/xyz/pqr/$values" -type f -ls` >> Report.txt } I am able to get output of print `find /abc/xyz/pqr/$values" -type f -ls` >> Report.txt in... (2 Replies)
Discussion started by: harpal singh
2 Replies

10. Solaris

Display Message Question

I'm have a script that I am creating and I want the dmesg command to only show output for the current day and the day before. What would be the command to make this work? Thanks (8 Replies)
Discussion started by: MattyJ2009
8 Replies
PERROR(1)                                                      MySQL Database System                                                     PERROR(1)

NAME
perror - explain error codes SYNOPSIS
perror [options] errorcode ... DESCRIPTION
For most system errors, MySQL displays, in addition to an internal text message, the system error code in one of the following styles: message ... (errno: #) message ... (Errcode: #) You can find out what the error code means by examining the documentation for your system or by using the perror utility. perror prints a description for a system error code or for a storage engine (table handler) error code. Invoke perror like this: shell> perror [options] errorcode ... Example: shell> perror 13 64 OS error code 13: Permission denied OS error code 64: Machine is not on the network The meaning of system error messages may be dependent on your operating system. A given error code may mean different things on different operating systems. perror supports the following options. o --help, --info, -I, -? Display a help message and exit. o --ndb Print the error message for an NDB Cluster error code. This option is deprecated in NDB 7.6.4 and later, where perror prints a warning if it is used, and subject to removal in a future NDB Cluster release series. Use the ndb_perror utility instead. o --silent, -s Silent mode. Print only the error message. o --verbose, -v Verbose mode. Print error code and message. This is the default behavior. o --version, -V Display version information and exit. COPYRIGHT
Copyright (C) 1997, 2018, Oracle and/or its affiliates. All rights reserved. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Oracle Corporation (http://dev.mysql.com/). MySQL 5.7 06/07/2018 PERROR(1)
All times are GMT -4. The time now is 12:45 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy