title: Linux: copy files which are listed in a txt file from a directory (with subdirectories) to a specified folder
body: <p>I have a txt file with only names of files in it. I.e. "999000 999008 999021" etc. They correspond to files that I have with the extension *.source I.e. 999000.source 999008.source 999021.source. These files exist within different sub-directories beneath a master directory. How would I go about copying the files listed in the txt file to another specified folder using commands in Linux?</p>
  
  <p>Thanks,
  Jake  </p>