bash

This file is part of eRCaGuy_hello_world: https://github.com/ElectricRCAircraftGuy/eRCaGuy_hello_world

Other pages

1. ansi_text_format_lib_README.md

Notes

wip means "work-in-progress".

Shellcheck

Use the shellcheck static code analyzer to analyze your bash scripts for errors before running them. Learn a little bit more about shellcheck in this answer which helped me here: Stack Overflow: How to write bash function to print and run command when the command has arguments with spaces or things to be expanded.

# Install shellcheck
sudo apt update && sudo apt install shellcheck 

# Use it to scan a bash .sh program
shellcheck path/to/my_script.sh

If you ever need to disable a shellcheck warning or error, see here: https://github.com/koalaman/shellcheck/wiki/Ignore. The syntax would look like this. The # shellcheck disable=SC2059 syntax is what disables that shellcheck error code on the line immediately following it.

hexToAscii() {
  # shellcheck disable=SC2059
  printf "\x$1"
}

For a info. on the shellcheck "check" errors, per their codes, see here: https://github.com/koalaman/shellcheck/wiki/Checks
A full list is here: https://gist.github.com/nicerobot/53cee11ee0abbdc997661e65b348f375 Example page: https://github.com/koalaman/shellcheck/wiki/SC1000

bash script generic templates:

For an excellent bash script template, see these files as a starting points:

1. [BEST] argument_parsing__3_advanced__gen_prog_template.sh
2. https://github.com/ElectricRCAircraftGuy/eRCaGuy_dotfiles/blob/master/useful_scripts/git-disable-repos.sh
3. Another good example: my pdf2searchablepdf bash script:
   1. Repo: https://github.com/ElectricRCAircraftGuy/PDF2SearchablePDF
   2. Exact bash script file: https://github.com/ElectricRCAircraftGuy/PDF2SearchablePDF/blob/master/pdf2searchablepdf.sh
4. git-blametool.sh