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I have some legacy softwares that I need to automate under Control-M. These job are under Windows 2008R2.

These jobs have an exit code 0 if they run ok, but also if they can manage some errors. I need to raise an alarm when a specific string is in the log.
The string is not in the output of executable.

I implemented another job for this. It goes to search a string inthe file and in "On Do Actions" I search for the statement.

To have the statement in the output I think to use something like a grep. I used:

  • findstr

    findstr "myerrorcode" D:\Log\greptest_%%$ODATE..log

  • grep under cygwin

In both case I have an identical situation:

  • If the string is found, everythings is ok
  • If the file is not found or cannot be open, grep or findstr return an exit code = 1. This is ok, because the job has to raise an error.

But the problem is: when the string is not found in the file, both grep and findstr have a return code = 1.

How can I discriminate the cases when the file cannot be open and when everything runs ok, but the sring in the log is not found?

kvantour
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user_0
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2 Answers2

3

You should be able to use grep's exit status to detect the reason for failure. According to the POSIX grep docs, exit status section:

EXIT STATUS

   The following exit values shall be returned:

   0    One or more lines were selected.
   1    No lines were selected.
   >1   An error occurred.

It's similar for GNU grep (consistent, but more specific):

Normally the exit status is 0 if a line is selected, 1 if no lines were selected, and 2 if an error occurred. [...] Other grep implementations may exit with status greater than 2 on error.

For example, in bash, you could use the case command to handle multiple branches like this:

#!/bin/bash

# search for error code in file
grep code file

# store the exit status in variable err
err=$?

# test several cases
case $err in
    0) echo All good.;;
    1) echo Code not found.;;
    *) echo Error reading from file.;;
esac
randomir
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0

You can handle this within Control-M easily: Add in Job Tab "Action"

  1. Add "On Do Action"
  2. On: "Specific statement output"
  3. Statement (as Control-M documentation state):

A character string, from 1 through 132 characters in length, containing a statement from the job script file The specified string can be a portion of the statement.

Statement character strings can each contain mask characters. Valid mask characters are:

* – represents any number of characters (including no characters)
$ – represents any single character
? – represents any single character
  1. Code:

A character string, from 1 through 255 characters in length, to be compared to the operating system’s response to the specified statement.

Code character strings can each contain mask characters. Valid mask characters are:

* – represents any number of characters (including no characters)
$ – represents any single character
? – represents any single character

Example: On Do Action Control-M 8

dw3phCnR
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