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Full Discussion: How to do core dump analysis
Top Forums UNIX for Advanced & Expert Users How to do core dump analysis Post 73679 by vijaysabari on Friday 3rd of June 2005 08:50:23 AM
Old 06-03-2005
Dbx debugger to analysis coredumps ......

dbx debugger is used to analysis the coredumps ............. i will explain with anexample

cc -g first.c
dbx ./a.out


Reading a.out
Reading ld.so.1
Reading libc.so.1
Reading libdl.so.1
Reading libc_psr.so.1
(dbx 1) sif main
(2) stop infunction main
(dbx 2) run
Running: a.out
(process id 6156)
stopped in main at line 7 in file "first.c"
7 printf("%d\n",time(&t1));
(dbx 3) n
1117798709
stopped in main at line 8 in file "first.c"
8 for ( i=0 ; i<10; i++ ){
(dbx 4) n
stopped in main at line 9 in file "first.c"
9 printf("%d\n",rand());
(dbx 5) n
16838
stopped in main at line 8 in file "first.c"
8 for ( i=0 ; i<10; i++ ){
(dbx 6) exitbx 6)
 

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DATE_DEFAULT_TIMEZONE_GET(3)						 1					      DATE_DEFAULT_TIMEZONE_GET(3)

date_default_timezone_get - Gets the default timezone used by all date/time functions in a script

SYNOPSIS
string date_default_timezone_get (void ) DESCRIPTION
In order of preference, this function returns the default timezone by: o Reading the timezone set using the date_default_timezone_set(3) function (if any) o Prior to PHP 5.4.0 only: Reading the $TZ environment variable (if non empty) o Reading the value of the date.timezone ini option (if set) o Prior to PHP 5.4.0 only: Querying the host operating system (if supported and allowed by the OS). This uses an algorithm that has to guess the time- zone. This is by no means going to work correctly for every situation. A warning is shown when this stage is reached. Do not rely on it to be guessed correctly, and set date.timezone to the correct timezone instead. If none of the above succeed, date_default_timezone_get will return a default timezone of UTC. RETURN VALUES
Returns a string. CHANGELOG
+--------+---------------------------------------------------+ |Version | | | | | | | Description | | | | +--------+---------------------------------------------------+ | 5.4.0 | | | | | | | The TZ environment variable is no longer used to | | | guess the timezone. | | | | | 5.4.0 | | | | | | | The timezone is no longer guessed from informa- | | | tion available through the operating system as | | | the guessed timezone can not be relied on. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 Getting the default timezone <?php date_default_timezone_set('Europe/London'); if (date_default_timezone_get()) { echo 'date_default_timezone_set: ' . date_default_timezone_get() . '<br />'; } if (ini_get('date.timezone')) { echo 'date.timezone: ' . ini_get('date.timezone'); } ?> The above example will output something similar to: date_default_timezone_set: Europe/London date.timezone: Europe/London Example #2 Getting the abbreviation of a timezone <?php date_default_timezone_set('America/Los_Angeles'); echo date_default_timezone_get() . ' => ' . date('e') . ' => ' . date('T'); ?> The above example will output: America/Los_Angeles => America/Los_Angeles => PST SEE ALSO
date_default_timezone_set(3), "List of Supported Timezones". PHP Documentation Group DATE_DEFAULT_TIMEZONE_GET(3)
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