bkahlert

Bash Error Handling — shell options -e/errexit, inherit_errexit, -E/errtrace and the ERR trap

This Markdown file is 90% the output of error_handling.bash.

I wrote the script / this document to describe the shell options errexit, inherit_errexit, and errtrace as well as the ERR trap and their conditions and interactions in more detail as this is what I always failed to understand with the pieces of information I found so far.

References

• shell options: https://www.gnu.org/software/bash/manual/html_node/The-Set-Builtin.html

croesus

#!/bin/bash

if [ "$#" -ne 6 ]; then
  echo "Usage: ddbtablescan.sh <profile> <table> <attributeToFilterOn> <attributeValueToFilterWith> <maxItemsPerSec> <listOfAttributesToReturn>"
  echo "e.g."
  echo "ddbtablescan.sh my-profile Users company Amazon 10 firstName,lastName,email"
 exit 1
fi

found=$(which aws)