Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: timing a loop in unix.
Top Forums Shell Programming and Scripting timing a loop in unix. Post 34110 by wolkott on Tuesday 4th of February 2003 01:09:25 PM
Old 02-04-2003
Network timing a loop in unix.
hi guys..
i have a shell script that loops through a certain directory to see if a file has been created and then prints the file if it exists...
the only problem i have now is that sometimes the flat does not get created by the program thats supposed to create it, in this scenario, my loop will never end.. is there a way i can check to say if the loop has been on for like 2 mins to break..

this is what i have so far..

if [[ -f ${data_dir}/sqrs0008.dat ]] then
exec < ${data_dir}/sqrs0008.dat
IFS=","
while read schedule_id username printer_name;
do
until [[ -f ${output_dir}/${db_user}.${schedule_id}.prn ]]
do
sleep 10
if [[ -f ${output_dir}/${db_user}.${schedule_id}.prn ]] then
lp -d${printer_name} -t$username ${output_dir}/${db_user}.${schedule_id}.prn
break
fi
done
done
fi
can anyone help out there, as i need an urgent fix to this ??

cheers guys
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

scp timing out

having problems using scp in that during peak hours it appears to time out. anyone have similar experiences? any thoughts regarding a solution... (1 Reply)
Discussion started by: jph
1 Replies

2. Shell Programming and Scripting

Timing out a SSH

I need to make it so an autmated process which involves ssh, times out if ssh prompts for a password. Most of the time it shouldnt prompt for a password. But if it does i need it to time it out or get a status and stop the ssh and log that the ssh failed and move onto the next server. Is there any... (9 Replies)
Discussion started by: rcunn87
9 Replies

3. AIX

Kshell scripts and timing

Hello everyone, I have a script thats acting funky, what I would like to do is report to a file, how long its taking to get to certain area's, in seconds. For example. -- Start timer -- Run unix command 1 -- Run unix command 2 -- Stop timer -- Report Seconds -- etc etc Is there a way... (3 Replies)
Discussion started by: dbridle
3 Replies

4. Programming

timing your functions

hi everyone. If you have a function created in your code and you want to find out how long it takes for it to run you can use a struct called gettimeofday(). so lets say we have a function like this int myfunction (int r) { /*some math calculations*/ return answer; } How do i set up... (3 Replies)
Discussion started by: bebop1111116
3 Replies

5. Programming

Help with __builtin_prefetch function and it's timing

Hello there, I just needed to know how to get the timing right when using the gcc __builtin_prefetch() function, that is, how many instructions before the actual utilization of the data should I make the prefetch call. I will be measuring the L1 cache hit rate with valgrind's cachegrind,... (3 Replies)
Discussion started by: Tavo
3 Replies

6. Programming

Weird timing results in C

I was running some timings in my code to see which of several functions was the best and I've been getting some odd results. Here's the code I'm using: static double time_loop(int (*foo)(int)) { clock_t start, end; int n = 0, i = 0; start = clock(); for (; i <= MAXN; i++) if... (6 Replies)
Discussion started by: CRGreathouse
6 Replies

7. Shell Programming and Scripting

Timing a script

i have a very big script i have that i'd like to add a timeout to. this script runs on a several remote host. i update this script with timeout clause and then copy it over to all the hosts on which it is currently on. basically, i want the timeout to make the script abort/exit if it's... (1 Reply)
Discussion started by: SkySmart
1 Replies

8. Shell Programming and Scripting

Timing the shell script

I have two shell scripts, one written with xargs for parallel processing (p1) and the other written in old school way (p3) . when I execute them, i get the below values. $ time ./p1 real 0m25.36s user 0m0.32s sys 0m0.80s $ time ./p3 real 0m23.25s user 0m6.20s sys ... (4 Replies)
Discussion started by: luhah
4 Replies

9. Red Hat

Hardware and system timing are different

-> We have 2 servers server1 and server2 server. ->server1 is master application and server2 is slave application server. ->output of server1 hardware and slave timing: # hwclock --show Thu 05 Jun 2014 05:34:08 PM SGT -0.465666 seconds # date Thu Jun 5 17:34:16 SGT 2014 # cd... (6 Replies)
Discussion started by: manjusharma128
6 Replies

10. Programming

Byte swap timing

I have noticed the difference in byte swap timing between two Ubuntu systems. The bswap_32 used to work just fine on the old system, but on the new one it lags behind home-grown swap. My code: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <byteswap.h> #include... (4 Replies)
Discussion started by: migurus
4 Replies

LEARN ABOUT BSD

break

break(1)                                                           User Commands                                                          break(1)

NAME

       break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until  loop

SYNOPSIS

   sh
       break [n]

       continue [n]

   csh
       break

       continue

   ksh
       *break [n]

       *continue [n]

DESCRIPTION

   sh
       The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels.

       The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.

   csh
       The  break  utility  resumes  execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current
       line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.

       The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop.

   ksh
       The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified,  then  break  n  levels.  If  n  is
       greater than the number of enclosing loops, the outermost enclosing loop shall be exited.

       The  continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-
       th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used.

       On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:

       1.  Variable assignment lists preceding the command remain in effect when the command completes.

       2.  I/O redirections are processed after variable assignments.

       3.  Errors cause a script that contains them to abort.

       4.  Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a  vari-
           able  assignment.  This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera-
           tion are not performed.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), exit(1), ksh(1), sh( 1), attributes(5)

SunOS 5.10                                                          17 Jul 2002                                                           break(1)
All times are GMT -4. The time now is 12:39 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy