testdata/test.sh|1 col 1| Tips depend on target shell and yours is unknown. Add a shebang or a 'shell' directive.
testdata/test.sh|1 col 14| Quote the parameter to -name so the shell won't interpret it.
testdata/test.sh|1 col 14| Use ./glob or -- glob so names with dashes won't become options.
testdata/test.sh|3 col 6| Grep uses regex, but this looks like a glob.
testdata/test.sh|5 col 5| Remove spaces around = to assign (or use [ ] to compare, or quote '=' if literal).
testdata/test.sh|7 col 19| Use $(...) notation instead of legacy backticks ....