Ignore

To ignore a shellcheck error, you can do one of three things:

Use a directive to disable a certain instance:

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

Use a -e flag to disable a specific error when running shellcheck:

$ shellcheck -e SC2059 myscript

Set the SHELLCHECK_OPTS variable in your .bashrc, /etc/profile or equivalent:

export SHELLCHECK_OPTS="-e SC2059"

Add a directive at the top of the file:

#!/bin/sh
# shellcheck disable=SC2059

Note that the directive must be on the first line after the shebang (#779). That will be fixed in 0.4.6+