从手册页中获取:
-n, --no-clobber do not overwrite an existing file (overrides a previous -i option)
例:
cp -n myoldfile.txt mycopiedfile.txt

从手册页中获取:
-n, --no-clobber do not overwrite an existing file (overrides a previous -i option)
例:
cp -n myoldfile.txt mycopiedfile.txt