Kaa

Prefer plain Bourne shell (sh) scripts when possible. Avoid using GNU Bash, ksh, or csh since they might be missing in a particular environment.
Use shebang at the first line of each shell script.
```
#!/bin/sh
```
Use the shellcheck utility to validate correctness of shell scripts.
Use set -e to stop script execution when any command fails.

Use new line after conditional and loop statements for readability purposes.

# Good
if [ 1 -le 0 ]; then
  echo YES
else
  echo NO
fi

# Bad
if [ 1 -le 0 ]; then echo YES; else echo NO; fi