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Add shebang information #155

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Jul 30, 2024
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Add shebang information #155

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9 changes: 8 additions & 1 deletion ebook/en/content/002-bash-structure.md
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Expand Up @@ -22,4 +22,11 @@ In order to execute/run a bash script file with the bash shell interpreter, the

This is also called a [Shebang](https://en.wikipedia.org/wiki/Shebang_(Unix)).

All that the shebang does is to instruct the operating system to run the script with the `/bin/bash` executable.
All that the shebang does is to instruct the operating system to run the script with the `/bin/bash` executable.

However, bash is not always in `/bin/bash` directory, particularly on non-Linux systems or due to installation as an optional package. Thus, you may want to use:

```bash
#!/usr/bin/env bash
```
It searches for bash executable in directories, listed in PATH environmental variable.