xxxxxxxxxx
//in admin folder must be terminal in as root
for root type
$ sudo su
//to remove file
//as example
rm -f /usr/bin/node
xxxxxxxxxx
//To delete a single file forcefully i.e-Write protected file
rm -f filename
xxxxxxxxxx
=> To delete a single file:
unlink filename
rm filename
=> To delete multiple files at once
rm filename1 filename2 filename3
rm *.pdf