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makefilegitignore

How to implement all files which have no extension with asterisk?

Is there some way to implement all files with no extension using asterisk? I want to use it in Makefile or .gitignore implementation to remove or ignore all non-extension files such as README, Makefile and complied C file. When I use just rm * format, it delete ALL files regardless of extension, while I want to control ONLY non-extension files.

Solution

  • I will assume that a file name with no extension means without a dot.

    In a .gitignore file you can include again (with !pattern) files that have been excluded by a previous pattern. So:

    *
!*.*

    should ignore all files (or directories) without extension.

    In a Makefile you can use functions or macros provided by your version of make (which you forgot to indicate). Example if you use GNU make with wildcard and filter-out:

    ALL := $(wildcard *)
WITH_EXTENSION := $(wildcard *.*)
WITHOUT_EXTENSION := $(filter-out $(WITH_EXTENSION),$(ALL))

.PHONY: test
test:
    @echo $(WITHOUT_EXTENSION)

    Note: it would have been be better to ask two different questions.