String size limit for 'echo'... Post: 302902465

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Top Forums UNIX for Dummies Questions & Answers String size limit for 'echo'... Post 302902465 by wisecracker on Tuesday 20th of May 2014 04:25:36 PM

05-20-2014

Registered User

String size limit for 'echo'...

Hi guys, man bash doesn't help much here nor does the WWW.
(I have discovered there is technically no limit to a bash array.)

I am thinking of adding a new full manual inside AudioScope.sh.

A few questions here.

The main question is, assuming I go ahead with this idea:-
Is there a limit to a string size for echo to be able to print or redirect?

It will look something like this inside single quotes used ONLY at the start and end of the string:-

Code:

..........First part of AudioScope.sh script.
# Start of manual...
echo 'Some huge file
with lots of punctuation, typos
and newlines. It could be 200kB or more in size and will sit
anywhere of my choice inside the code.' > AudioScope.Manual
# Save to the current drawer
# End of manual...
..........Last part of AudioScope.sh script.

I already know that technically there is no limit to the script size itself but this is different.
Once saved there will be a command call to 'less' inside the script if required to read the file generated.

Assuming this can be done then is it possible to delete the lines from the LIVE running script, from..........
# Start of manual... to # End of manual...
..........and then resave the running script less all of these lines on the fly?
In essence, a self editing facility on the first run only...

(TIA and hope this is lucid enough.)

wisecracker

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LEARN ABOUT PHP

set_time_limit

SET_TIME_LIMIT(3)							 1							 SET_TIME_LIMIT(3)

set_time_limit - Limits the maximum execution time

SYNOPSIS

       bool set_time_limit (int  $seconds)

DESCRIPTION

	Set  the  number of seconds a script is allowed to run. If this is reached, the script returns a fatal error. The default limit is 30 sec-
       onds or, if it exists, the max_execution_time value defined in the php.ini.

	When called, set_time_limit(3) restarts the timeout counter from zero. In other words, if the timeout is the default 30  seconds,  and	25
       seconds into script execution a call such as set_time_limit(20) is made, the script will run for a total of 45 seconds before timing out.

PARAMETERS

	      o $seconds
		- The maximum execution time, in seconds. If set to zero, no time limit is imposed.

RETURN VALUES

	Returns TRUE on success, or FALSE on failure.

NOTES

       Warning

	       This  function  has no effect when PHP is running in safe mode. There is no workaround other than turning off safe mode or changing
	      the time limit in the php.ini.

       Note

	       The set_time_limit(3) function and the configuration directive max_execution_time only affect the  execution  time  of  the  script
	      itself.  Any  time  spent  on activity that happens outside the execution of the script such as system calls using system(3), stream
	      operations, database queries, etc. is not included when determining the maximum time that the script has been running. This  is  not
	      true on Windows where the measured time is real.

SEE ALSO

       max_execution_time, max_input_time.

PHP Documentation Group 													 SET_TIME_LIMIT(3)