Error Log C
Contents |
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this
C++ Log File Example
site About Us Learn more about Stack Overflow the company Business Learn more c log file example about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x
How To Create A Log File In C
Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up storing logs/error c++ log file class message on C programming up vote 3 down vote favorite When an error occurs, I would like my C code to store the error before exiting the program. Is it advised to store the stderr to a file (e.g., /home/logs.txt) or would it be advised to use a different method to keep the logs/error report (considering the programming environment is Linux). E.g., for the c logger example code below, how I could apply the method to store the logs/error message on /home/log.txt or /home/log FILE *fp1; fp1 = fopen("/sys/class/gpio/export","w"); if(fp1 == NULL){ fprintf(stderr, "errno:%s - opening GPIO136 failed - line 739\n ", strerror(errno)); close(fp1); exit(1); } Thank you. c linux error-handling posix stderr share|improve this question asked Apr 20 '13 at 3:13 sven 31011229 1 The call to close() is wrong, as it's meant for file descriptors not for file handles. You should have reveived a compiler warning/error here, as you pass a pointer to where an integer is expected. However calling fclose() would be redundant, as the file had not been opened, which is indicated by fp1 being NULL. –alk Apr 20 '13 at 8:59 Thank you alk, I will fix it on my code –sven Apr 20 '13 at 13:01 add a comment| 2 Answers 2 active oldest votes up vote 3 down vote accepted If stderr is always used to print out all your error message, so, you can redirect output to a specific file. $ program 2>~/logs.txt For a better logging tool, you can use: syslog standard function. log4c library. share|impr
Errors Exceptions Generators References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an
How To Create Log File In C Programming
Apache module Session Security Filesystem Security Database Security Error Reporting Using Register logging in c++ Globals User Submitted Data Magic Quotes Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with
Log File C++ Code
XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Safe Mode Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation http://stackoverflow.com/questions/16116143/storing-logs-error-message-on-c-programming Authentication Services Command Line Specific Extensions Compression and Archive Extensions Credit Card Processing Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing http://php.net/manual/en/function.error-log.php Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation Keyboard Shortcuts? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search(current page) / Focus search box error_reporting » « error_get_last PHP Manual Function Reference Affecting PHP's Behaviour Error Handling Error Handling Functions Change language: English Brazilian Portuguese Chinese (Simplified) French German Japanese Korean Romanian Russian Spanish Turkish Other Edit Report a Bug error_log (PHP 4, PHP 5, PHP 7)error_log — Send an error message to the defined error handling routines Description bool error_log ( string $message [, int $message_type = 0 [, string $destination [, string $extra_headers ]]] ) Sends an error message to the web server's error log or to a file. Parameters message The error message that should be logged. message_type Says where the error should go. The possible message types are as follows: error_log() log types 0 message is sent to PHP's system logger, using the Operating System's sy
DOMAINS WEB DESIGN WEB DESIGN SERVICES CREATE YOUR OWN WEBSITE SITE HOSTING TOOLS MEET US MEET US ABOUT US PARTNERS & AWARDS BLOG WE'RE HIRING CONTACT US AMP LOGIN SUPPORT CENTER Search Support Center Product Guides Dedicated Hosting Reseller Hosting KnowledgeBase Website Email Domain Names Reseller Billing Community Support Browse Questions Ask a Question User Submitted Articles Education Channels Android BoldGrid cPanel DokuWiki Drupal 7 Drupal 8 Everything Email Joomla 2.5 Joomla 3.1 K2 Magento 1.6 Mambo MediaWiki Moodle Movable Type OpenCart OpenCart 2.0 osCommerce PHP-Fusion PHP-Nuke phpBB phpList Premium Website Builder PrestaShop 1.5 PrestaShop 1.6 SMF Tiki Wiki VirtueMart 3 Web Hosting Manager Website Design WordPress Tools & Resources Email Configuration Blacklist Check Visual DNS Lookup Quick Tagger Icon Sets Favicon Generator Bounce Back Parser What is my IP address? >>Website .htaccess (17)Adobe Flash (2)APIs (2)Backup and Restore (15)Billing (8)Browser Issues (2)Connecting to a Database (5)cPanel (26)cPanel Account Management (16)Cron Jobs (4)Cube Cart (2)Database Setup (5)Database Troubleshooting (6)Domain Management (2)Dreamweaver (12)Drush (2)eCommerce (7)Elasticsearch (4)Fantastico (4)File Management (16)File Manager (6)FTP (10)FTP Client Setup (21)General Server Setup / Management (15)Getting Started Guides (18)Ghost (3)Google Tools (21)How To (23)HTML (2)Image Editing (2)IP Addresses (3)iWeb (1)JavaScript (2)Joomla (10)Joomla 2.5 (36)Koken (11)Linux (27)Logaholic (5)Magento (2)Maintaining Your Website (1)Managing Files (7)Microsoft FrontPage (11)Microsoft Publisher (1)ModSecurity (7) MODx (3)New Customers (7)Open Classifieds (1)PCI Compliance (7)PHP (15)PHP Configuration (7)PHP Troubleshooting (6)phpBB (25)phpMyAdmin (10)Premium Website Builder (22)Prestashop (1)Protecting Files (5)Publishing Your Site (2)Pytho