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Full Discussion: Waiting for a background process to finish
Top Forums Shell Programming and Scripting Waiting for a background process to finish Post 302223128 by vineetbhati on Friday 8th of August 2008 12:03:26 PM
Old 08-08-2008
Waiting for a background process to finish
Hello,
I am a novice shell script programmer. And facing this problem any help is appreciated.
I m writing a shell script and running few commands in it background as I have to run them simultaneously.
Sample code :

sql_prog &
sql_prog &
sql_prog &
echo "Process Completed"

Here sql_prog is user defined function which runs some sql queries.
The problem is as soon as it executes these last sql_prog it quickly prints the last statement. I want that the program should wait for last echo statement and print it only once all the above 3 sql_prog are finished.
Is there any easier way to do this.

Thanks
 

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LEARN ABOUT CENTOS

platform::shell

platform::shell(n)					       Tcl Bundled Packages						platform::shell(n)

__________________________________________________________________________________________________________________________________________________

NAME

       platform::shell - System identification support code and utilities

SYNOPSIS

       package require platform::shell ?1.1.4?

       platform::shell::generic shell
       platform::shell::identify shell
       platform::shell::platform shell
_________________________________________________________________

DESCRIPTION

       The platform::shell package provides several utility commands useful for the identification of the architecture of a specific Tcl shell.

       This  package  allows the identification of the architecture of a specific Tcl shell different from the shell running the package. The only
       requirement is that the other shell (identified by its path), is actually executable on the current machine.

       While for most platform this means that the architecture of the interrogated shell is identical to the architecture of  the  running  shell
       this  is  not generally true. A counter example are all platforms which have 32 and 64 bit variants and where a 64bit system is able to run
       32bit code. For these running and interrogated shell may have different 32/64 bit settings and thus different identifiers.

       For applications like a code repository it is important to identify the architecture of the shell which will  actually  run  the  installed
       packages, versus the architecture of the shell running the repository software.

COMMANDS

       platform::shell::identify shell
	      This command does the same identification as platform::identify, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::generic shell
	      This command does the same identification as platform::generic, for the specified Tcl shell, in contrast to the running shell.

       platform::shell::platform shell
	      This command returns the contents of tcl_platform(platform) for the specified Tcl shell.

KEYWORDS

       operating system, cpu architecture, platform, architecture

platform::shell 						       1.1.4							platform::shell(n)
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