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Top Forums Shell Programming and Scripting Help with make sure shell script execute instruction in flow Post 302507153 by edge_diners on Tuesday 22nd of March 2011 11:22:42 PM
Old 03-23-2011
Help with make sure shell script execute instruction in flow

Hi,

I want to write a shell script to make sure all the instruction is executive in flow.
eg.
I want my shell script to run finish this two progress first:
Code:
./program input_file_1.txt > input_file_1.txt.out &
./program input_file_2.txt > input_file_2.txt.out &

After then, only run the following command by using the output result from the above progress:
Code:
cat *.txt.out > input_file.final

Below is the content of the shell script that I wrote:
Code:
#!/bin/sh
./program input_file_1.txt > input_file_1.txt.out &
./program input_file_2.txt > input_file_2.txt.out &
cat *.txt.out > input_file.final

Unfortunately, when I running the shell script above. It will automatic execute the "cat *.txt.out > input_file.final". Even though my "./program input_file_X.txt > input_file_X.txt.out &" is still running. End up, my "input_file.final" is empty since the first two progress is still running and without produce any output file yet Smilie

Does anybody got any idea how to make sure the above shell script will start running "cat *.txt.out > input_file.final" only when the first two progress is run finish.

Thanks for any advice.
 

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SHUNIT2(1)																SHUNIT2(1)

NAME
shunit2 - A unit test framework for shell scripts SYNOPSIS
shunit2 unitfile DESCRIPTION
shUnit2 is a xUnit unit test framework for Bourne based shell scripts, and it is designed to work in a similar manner to JUnit, PyUnit, etc.. If you have ever had the desire to write a unit test for a shell script, shUnit2 can do the job. You can either run shunit2 directly from the commandline and specify the unit file or directly source the shunit2 executable. If you directly execute shunit2 and don't specify a unitfile shunit2 assumes a empty testfile and will return without an error message. EXAMPLE
Simple script to test if 1 equals 1 #! /bin/sh testEquality() { assertEquals 1 1 } # load shunit2 . shunit2 Execute shUnit2 unit tests directly from the commandline shunit2 /path/to/unit/file OPTIONS
shunit2 does not support any commandline options at all. You can either source shunit2 to execute your unit tests or directly run shunit2 as a commandline script. SEE ALSO
For more information see http://code.google.com/p/shunit2/ or have a look at the installed documentation in /usr/share/doc/shunit2/ AUTHOR
shunit2 was written by Kate Ward <kate.ward@forestent.com>. This manpage was written by Ulrich Dangel <mru@spamt.net>. 2.1.6 03/25/2012 SHUNIT2(1)
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