Make shell scripts more robust by following advice from the Shellcheck linter.
Automatically fixes:
- Install Shellcheck.
- Run
find . -name '*.sh' | xargs /path/to/main.py.
This program uses a naive approach of rewriting the file for each rule.
It does, however, take advantage of the fact that rules can appear in cascading
fashion. For example, with the expression x=$(ls),
SC2034 suggests exporting
the variable. However, after the fix (now export x=$(ls)), on a second run
it'll suggest declaring and assigning separately
SC2155. Fixing rules
iteratively in the same respective order avoids this issue.