delete any file command in linux code example

Example: how to delete a file in linux

single:
	rm filename 
    ----OR---- 
    unlink filename
multiple:
	rm filename1 filename2 filename3
all filetype:
	rm *.pdf
with confirmation:
	rm -i filename
	rm -i filename1 filename2 filename3
without prompting even writeprotected:
	rm -f filename
	rm -f filename
without a prompt in verbose mode:
	rm -fv *.txt