Documented in Volume 1 of the UNIX Programmers Manual.
% mv oldfile newfile moves the file named oldfile into the file named newfile. (This is actually a simple rename: newfile becomes the name of oldfile.)
% mv *.f ~/src moves all files in the current directory whose names end with '.f' to the subdirectory named 'src' in your login directory.
% mv -i fromfile tofile prompts if the destination file named tofile already exists.
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