• anonymouse2@sh.itjust.works
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      11 hours ago

      Let’s say, for example, you have a directory of files named x01-001; x01-002; x02-001; x02-002; x03-001… and so on.

      I want to create subdirectories for each ‘x’ iteration and move each set to the corresponding subdirectory. My loop would look like this:

      for i in {1…3}; do mkdir Data_x0$i && mv x0$i* Data_x0$i; done

      I’ve also been using it if I need to rename large batches of files quickly.

      • friend_of_satan@lemmy.world
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        9 hours ago

        Check out rename

        $ touch foo{1..5}.txt
        $ rename -v 's/foo/bar/' foo*
        foo1.txt renamed as bar1.txt
        foo2.txt renamed as bar2.txt
        foo3.txt renamed as bar3.txt
        foo4.txt renamed as bar4.txt
        foo5.txt renamed as bar5.txt
        $ rename -v 's/\.txt/.text/' *.txt
        bar1.txt renamed as bar1.text
        bar2.txt renamed as bar2.text
        bar3.txt renamed as bar3.text
        bar4.txt renamed as bar4.text
        bar5.txt renamed as bar5.text
        $ rename -v 's/(.*).text/1234-$1.txt/' *.text
        bar1.text renamed as 1234-bar1.txt
        bar2.text renamed as 1234-bar2.txt
        bar3.text renamed as 1234-bar3.txt
        bar4.text renamed as 1234-bar4.txt
        bar5.text renamed as 1234-bar5.txt
        
      • tetris11
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        9 hours ago

        xargs is also fun, and assuming your for loop doesn’t update anything out of the loop, is highly parallelizable

        The equivalent of the same command, that handles 10 tasks concurrently, using %% as a variable placeholder.

        seq 1 100 | xargs -I'%%' -P 10 sh -c 'mkdir Data_X0%% && mv x0%%* Data_X0%%;'
        

        But for mass renaming files, dired along with rectangle-select and multicursors within Emacs is my goto.