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action:Execute_a_Shell_Script

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action:Execute_a_Shell_Script [2019/10/07 04:37]
peternlewis [Execute a Shell Script]
action:Execute_a_Shell_Script [2019/10/07 16:15]
JMichaelTX Reorganize instructions for using shebang
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 The //Execute a Shell Script// action executes a specified shell script using `/bin/sh`, either from a file or from the script embedded in the action. The //Execute a Shell Script// action executes a specified shell script using `/bin/sh`, either from a file or from the script embedded in the action.
 +
 +**Important:​**
 +
 +* It is best to always specify the language using the `#!` at the front of the script.
 +* The script is executed with the `sh` shell, so if you want to use another language, or use any special kinds of shell-specific syntax, then you should specify the language.
 +* For more details and examples, see [[https://​forum.keyboardmaestro.com/​t/​impact-of-macos-catalina-defaulting-to-unix-shell-using-zsh/​15503/​12?​u=jmichaeltx|How to Use Shebang at Top of Shell Script]]
  
 To execute the script from an external file, choose the "​Execute Script File" in the choices for script location. To execute the script from an external file, choose the "​Execute Script File" in the choices for script location.
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 If the script fails, the action will fail (v9.0+), potentially aborting the macro. If the script fails, the action will fail (v9.0+), potentially aborting the macro.
  
-The script is executed with the `sh` shell — if you want to use another language, or use any special kinds of shell-specific syntax, then you should specify the language using the `#!` at the front of the script.+
  
 ==== Using Keyboard Maestro Variables ==== ==== Using Keyboard Maestro Variables ====
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 that is the script will search for tools in the `/usr/bin` directory, then in the `/bin` directory, then `/usr/sbin` and finally `/​sbin`. ​ Only tools installed by the system will be in these directories - any tools you have installed will almost certainly be elsewhere and so not found by default because: that is the script will search for tools in the `/usr/bin` directory, then in the `/bin` directory, then `/usr/sbin` and finally `/​sbin`. ​ Only tools installed by the system will be in these directories - any tools you have installed will almost certainly be elsewhere and so not found by default because:
  
-  * **shell scripts are executed in non-interactive mode** (see the INVOCATION section of the [bash man page](https://​developer.apple.com/​library/​mac/​documentation/​Darwin/​Reference/​ManPages/​man1/​bash.1.html)), the **only** path preset by default is the system path.+  * **shell scripts are executed in non-interactive mode** (see the INVOCATION section of the sh man page), the **only** path preset by default is the system path.
   * **Thus, your tools or files may not be automatically accessible.**   * **Thus, your tools or files may not be automatically accessible.**
   * The `$PATH` environment variable you may have set in Terminal is **not** used.   * The `$PATH` environment variable you may have set in Terminal is **not** used.
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 ==== Forum ==== ==== Forum ====
  
 +- [[https://​forum.keyboardmaestro.com/​t/​impact-of-macos-catalina-defaulting-to-unix-shell-using-zsh/​15503/​12?​u=jmichaeltx|How to Use Shebang at Top of Shell Script]]
 - [[https://​forum.keyboardmaestro.com/​t/​png-metadata-comment/​6375/​29|PNG Metadata "​Comment"​]] - [[https://​forum.keyboardmaestro.com/​t/​png-metadata-comment/​6375/​29|PNG Metadata "​Comment"​]]
 - [[https://​forum.keyboardmaestro.com/​t/​having-trouble-with-quotes-and-shell-variables/​6236/​9|Having trouble with quotes and shell variables]] - [[https://​forum.keyboardmaestro.com/​t/​having-trouble-with-quotes-and-shell-variables/​6236/​9|Having trouble with quotes and shell variables]]
action/Execute_a_Shell_Script.txt · Last modified: 2023/09/22 04:39 by peternlewis