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Full Discussion: awk - Rename output file, after processing, same as input file
Top Forums UNIX for Dummies Questions & Answers awk - Rename output file, after processing, same as input file Post 302933696 by Don Cragun on Sunday 1st of February 2015 08:34:12 PM
Old 02-01-2015
Quote:
Originally Posted by High-T
Is it possible if I can put a time interval between the awk script and mv commands??

This would resolve my issue.
Yes you can put a time interval between the awk script and the mv command. (Look at the man page for sleep.) Doing so will make your shell script run longer, but will not make any difference in the results on any properly working system.

Unless something else is going on that you have not shown us, sleeping for a microsecond or sleeping for an hour will not make any difference at all.

You have shown us that awk is reading a file and nothing is writing to that file until awk finishes. Then, only after awk finishes, you mv a file. No delay added between the awk and the mv should make any difference at all unless you're running the awk asynchronously (and you have not shown us any script where the awk command is terminated by an ampersand).

Unless something is going on that you have not shown us, adding a sleep will not resolve your issue.
This User Gave Thanks to Don Cragun For This Post:
High-T
 

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LEARN ABOUT MOJAVE

sleep

SLEEP(1)						    BSD General Commands Manual 						  SLEEP(1)

NAME

     sleep -- suspend execution for an interval of time

SYNOPSIS

     sleep seconds

DESCRIPTION

     The sleep command suspends execution for a minimum of seconds.

     If the sleep command receives a signal, it takes the standard action.

IMPLEMENTATION NOTES

     The SIGALRM signal is not handled specially by this implementation.

     The sleep command will accept and honor a non-integer number of specified seconds (with a '.' character as a decimal point).  This is a non-
     portable extension, and its use will nearly guarantee that a shell script will not execute properly on another system.

EXIT STATUS

     The sleep utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     To schedule the execution of a command for x number seconds later (with csh(1)):

	   (sleep 1800; sh command_file >& errors)&

     This incantation would wait a half hour before running the script command_file.  (See the at(1) utility.)

     To reiteratively run a command (with the csh(1)):

	   while (1)
		   if (! -r zzz.rawdata) then
			   sleep 300
		   else
			   foreach i (`ls *.rawdata`)
				   sleep 70
				   awk -f collapse_data $i >> results
			   end
			   break
		   endif
	   end

     The scenario for a script such as this might be: a program currently running is taking longer than expected to process a series of files, and
     it would be nice to have another program start processing the files created by the first program as soon as it is finished (when zzz.rawdata
     is created).  The script checks every five minutes for the file zzz.rawdata, when the file is found, then another portion processing is done
     courteously by sleeping for 70 seconds in between each awk job.

SEE ALSO

     nanosleep(2), sleep(3)

STANDARDS

     The sleep command is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.

HISTORY

     A sleep command appeared in Version 4 AT&T UNIX.

BSD
								  April 18, 1994							       BSD
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