how to delete a file in linux

C++
# To delete a single file, use the rm or unlink command followed by the file name:

unlink filename
rm filename

# To delete multiple files at once, use the rm command followed by the file names separated by space.
rm filename1 filename2 filename3
# To remove an empty directory, use either rmdir or rm -d followed by the directory name:
rm -d dirname
rmdir dirname

# To remove non-empty directories and all the files within them, use the rm command with the-r (recursive) option:
rm -r dirname

# To remove non-empty directories and all the files without being prompted, use rm with the -r (recursive) and -f options:
rm -rf dirname

#To remove multiple directories at once, use the rm -r command followed by the directory names separated by space.
rm -r dirname1 dirname2 dirname3

rm filename
# or add -rf if you don't want to see confirm# EXAMPLE
rm YourFileName.ext

# SYNTAX
# rm [option(s)-if-any] <your-file-name-with-extension>

# +---------+------------------------------------------------------------------+
# | OPTIONS |  DESCRIPTION                                                     |
# +---------+------------------------------------------------------------------+
# |   -f    |  Force: ignore nonexistent files, never prompt                   |
# |   -i    |  Interactive: prompt before every removal                        |
# |   -I    |  Interactive: only prompt before removing more than three files  |
# |   -r    |  Recursive: remove directories and their contents recursively    |
# |   -v    |  Verbose:  explain what is being done                            |
# +---------+------------------------------------------------------------------+rm <file_name>find -type f -name '*text*' -delete
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

Source

Also in C++: