Created SC3036 (markdown)

Vidar Holen
2022-11-02 21:03:32 -07:00
parent 8954c881b8
commit 4751c40577

29
SC3036.md Normal file

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## In Dash, echo flags besides -n are not supported.
### Problematic code:
```sh
#!/bin/dash
echo -e "Name:\t$USER"
```
### Correct code:
```sh
#!/bin/dash
printf 'Name:\t%s\n' "$USER"
```
### Rationale:
Your script uses a shell feature not supported by the shebang. Either rewrite the script to be portable, or change the shebang to explicitly require a shell like Bash.
In this case, you can rewrite your use of `echo` using `printf`, which behaves the same across shells.
### Exceptions:
None
### Related resources:
* Help by adding links to BashFAQ, StackOverflow, man pages, POSIX, etc!