How to list files in directory using bash? [closed]

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How to copy only the regular files in a directory (ignoring sub-directories and links) to the same destination? (bash on Linux) A very large number of files

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for file in /source/directory/*
do
    if [[ -f $file ]]; then
        #copy stuff ....
    fi
done

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To list regular files in /my/sourcedir/, not looking recursively in subdirs:

find /my/sourcedir/ -type f -maxdepth 1

To copy these files to /my/destination/:

find /my/sourcedir/ -type f -maxdepth 1 -exec cp {} /my/destination/ \;

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To expand on poplitea's answer, you don't have to exec cp for each file: use xargs to copy multiple files at a time:

find /my/sourcedir -maxdepth 1 -type f -print0 | xargs -0 cp -t /my/destination

or

find /my/sourcedir -maxdepth 1 -type f -exec cp -t /my/destination '{}' +