I am writing a bash script and encountered this argument in answers here and here but I do not understand what it does. The manual is also not clear to me.

The second answer also states the following text which I also don't understand:

find /thisdir -type f -name "*.ogg" -print0 | xargs -0 -Imysongs mv -i mysongs /somedir 

The -I in the above command tells xargs what replacement string you want to use (otherwise it adds the arguments to the end of the command).

I am writing a bash script and encountered this argument -I in answers here and here but I do not understand what it does. The manual is also not clear to me.

The second answer also states the following text which I also don't understand:

find /thisdir -type f -name "*.ogg" -print0 | xargs -0 -Imysongs mv -i mysongs /somedir 

The -I in the above command tells xargs what replacement string you want to use (otherwise it adds the arguments to the end of the command).