At the end of a makefile I saw
rm -f *~ *.class
I understand the *.class, but what's *~?
It's basically removing backup files.
*~ means all files ending in ~.
Many Unix/Linux systems programs create backup files that end in ~.
For example, the emacs and nano editors automatically save a backup copy of each file you edit. When it saves a file, the old version gets saved using the file name with a tilde (~) added to the end.
Vim will do the same if you put :set backup in your .vimrc.
*~ on Unix/Linux is like *.bak on Windows.
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