在日志文件中搜索 - 退出代码

Question

我有一些遗留软件需要在 Control-M 下自动化。这些作业在 Windows 2008R2.

下

如果这些作业运行正常，但如果它们可以处理一些错误，则它们的退出代码为 0。当日志中有特定字符串时，我需要发出警报。
该字符串不在可执行文件的输出中。

我为此实施了另一项工作。它会在文件中搜索一个字符串，在 "On Do Actions" 我搜索语句。

要在输出中包含语句，我想使用类似 grep 的东西。我用过：

findstr

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

grep 在 cygwin

在这两种情况下，我都有相同的情况：

找到字符串就ok了
如果文件未找到或无法打开，grep 或 findstr return 退出代码 = 1。这没关系，因为作业必须引发错误。

但问题是：当在文件中找不到字符串时，grep 和 findstr 都有一个 return code = 1.

如何区分文件无法打开和运行一切正常，但未找到日志中的 sring 的情况？

Answer 1

您应该能够使用 grep 的退出状态来检测失败的原因。根据 POSIX grep docs，退出状态部分：

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.

GNU grep 类似（一致，但更具体）：

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.

例如，在 bash 中，您可以使用 case 命令来处理多个分支，如下所示：

#!/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

Answer 2

您可以在 Control-M 中轻松处理：在作业选项卡中添加 "Action"

添加"On Do Action"
开启："Specific statement output"
声明（作为 Control-M 文档状态）：

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

代码：

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

示例： On Do Action Control-M 8

在日志文件中搜索 - 退出代码

Search in logfile - exit code

shell

command-line

grep

control-m