06-16-2009
List all log records logged after $timestamp ?
I am trying to find a way to list every records inside a file (usually a log file) that are present after a record mathing/greater-then a timestamp supplied by another script.
The timestamp can be anywhere inside the record and it is usually in the standard `date` format (will not look for other formats).
ex:
Tue Jun 16 03:47:58 EDT 2009
I thought of using awk (on client's AIX 4.2) with index(str,regex) but that function does not see any timestamps inside the records (copied code below from memory).
awk -F" " '{
WHICHPOS=index($0,"[A-Z][a-z][a-z] [A-Z][a-z][a-z] [0-3][0-9] [0-2][0-9]:[0-5][0-9]:[0-5][0-9] * 20[0-9][0-9]")
if ( WHICHPOS > 0) print WHICHPOS, NR, $0
}' /tmp/a_file
At first the * was producting verry odd results (was replaced by content of `ls *`). So I removed the " * 20[0-9][0-9]" part.
But then, it never sees any timestamp (I checked the file content).
I am beginning to wonder what kind of regular expression that index() can take.
Is there a timestamp pattern available in regular expressions ?
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LEARN ABOUT PHP
time_sleep_until
TIME_SLEEP_UNTIL(3) 1 TIME_SLEEP_UNTIL(3)
time_sleep_until - Make the script sleep until the specified time
SYNOPSIS
bool time_sleep_until (float $timestamp)
DESCRIPTION
Makes the script sleep until the specified $timestamp.
PARAMETERS
o $timestamp
- The timestamp when the script should wake.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | This function is now available on Windows plat- |
| | forms. |
| | |
+--------+---------------------------------------------------+
ERRORS
/EXCEPTIONS
If the specified $timestamp is in the past, this function will generate a E_WARNING.
EXAMPLES
Example #1
A time_sleep_until(3) example
<?php
//returns false and generates a warning
var_dump(time_sleep_until(time()-1));
// may only work on faster computers, will sleep up to 0.2 seconds
var_dump(time_sleep_until(microtime(true)+0.2));
?>
NOTES
Note
All signals will be delivered after the script wakes up.
SEE ALSO
sleep(3), usleep(3), time_nanosleep(3), set_time_limit(3).
PHP Documentation Group TIME_SLEEP_UNTIL(3)