=~
regex matching is undefined.[ "$var" =~ .*foo[0-9]* ]
expr "$var" : ".*foo[0-9]*" > /dev/null
You are using =~
in a script declared to be compatible with POSIX sh or Dash.
=~
is not a POSIX operator and is unlikely to outside [[ ]]
in Bash and Ksh.
Use expr
's :
operator instead.
None
ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.