Note: This warning has been retired in favor of individual SC3xxx warnings for each individual issue. Removed in V0.7.2 - 2021-04-19
You are writing a script for dash, but you're using a
feature that dash doesn't support. See SC2039, the equivalent warning for POSIX sh, for
possible workarounds.
See also Ubuntu's DashAsBinSh migration guide for how to make bash-specific scripts dash-compatible.
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.